CN210119212U - Sphere fine-adjustment clamp suitable for measuring spherical error by laser interferometer - Google Patents
Sphere fine-adjustment clamp suitable for measuring spherical error by laser interferometer Download PDFInfo
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- CN210119212U CN210119212U CN201921253255.3U CN201921253255U CN210119212U CN 210119212 U CN210119212 U CN 210119212U CN 201921253255 U CN201921253255 U CN 201921253255U CN 210119212 U CN210119212 U CN 210119212U
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Abstract
The utility model discloses a sphere fine-tuning clamp suitable for measuring spherical errors by a laser interferometer, which comprises a motor, a base, a gear mechanism, a transmission mechanism and a ball support; the motor is positioned below the base, an output shaft of the motor is connected with the gear mechanism positioned above the base through a through hole arranged in the center of the base, the ball support is fixed on the gear mechanism through uniformly distributed support rods and used for supporting a measured ball, and the gear mechanism is used for adjusting the position of the measured ball through a transmission mechanism positioned below the ball support; the fixture can be matched with a spherical laser interferometer for use, is controlled by a motor, is high in transmission efficiency, and is stable in sphere positioning, the problem that the traditional fixture is low in adjustment precision and high in cost can be solved by assisting the spherical laser interferometer to measure the multi-angle laser interference surface morphology of the sphere, the fine adjustment precision of the sphere is further improved, and the fixture cost is reduced.
Description
Technical Field
The utility model belongs to machine-building design field and detecting instrument field relate to a spheroid fine setting anchor clamps suitable for laser interferometer measures spherical error.
Background
For spherical error measurement, ISO-3290 specifies that the spherical error is calculated by using the least-squares method, measured mainly on two or three mutually perpendicular equatorial planes. This method essentially finds the spherical error by measuring the roundness error. The sphere is a three-dimensional object, and the spherical error calculated by measuring the roundness error of two surfaces is unreliable.
At present, the detection method mainly comprises contact measurement, sphere vibration detection technology and the like. The principle of contact measurement is that a very small contact pin moves on a measured surface to obtain comprehensive information such as surface roughness, waviness, shape errors and other morphological characteristics, the method can only carry out detection within the track range of the contact pin every time, the integral quality of a bearing rolling body cannot be reflected, and the measurement result is easily influenced by the diameter and the shape of the probe pin head; the ball body vibration detection technology is a steel ball quality detection technology which is commonly used at present, and the principle of the ball body vibration detection technology is that a high-precision rotating main shaft is used for driving a detected steel ball to rotate, a piezoelectric accelerometer is used for picking up vibration signals of the steel ball, the waviness of the surface of the steel ball is represented, the surface quality of a single-grain ball body is comprehensively reflected, the surface roughness of the ball body, the spherical precision and the size are mutually different, and the like.
The laser interferometry has the advantages of high resolution, high accuracy, high sensitivity, good repeatability and the like. Related products are used for detecting the spherical surface at home and abroad, but in the detection process, the spherical center of the sphere is focused with a light beam focus in a manual mode, and meanwhile, the sphere is manually rotated, so that the error is large, and the efficiency is low.
Chinese patent application publication No. CN207365922U discloses a design of a centering fixture for measuring spherical errors, in which the objective of centering is achieved by controlling a fixture system to move in an X-Y-Z space coordinate system to align a sphere center with a focus of an optical path, but how to accurately position is not described, and the disadvantages of large operation errors, high price, and the like are mentioned.
The utility model discloses a further improve and to spheroidal fine setting precision and reduction anchor clamps cost, designed a spheroid fine setting anchor clamps suitable for laser interferometer measures spherical error. The fixture can be matched with a spherical laser interferometer for use, is controlled by a motor, is high in transmission efficiency, and is stable in sphere positioning, the fixture can assist the spherical laser interferometer to measure the multi-angle laser interference surface morphology of the sphere, so that the problems of low adjustment precision and high cost of the traditional fixture are solved, the fine adjustment precision of the sphere is further improved, and the fixture cost is reduced.
Disclosure of Invention
The utility model aims at providing a simple, high-efficient, the stable spheroid fine setting anchor clamps that are used for measuring spherical error of positioning for spherical error measures, this anchor clamps can use with the cooperation of spherical laser interferometer, realize the whole ball rotation of spheroid, supplementary spherical laser interferometer measures spheroid multi-angle laser interference surface appearance.
The utility model discloses specific technical scheme as follows:
a sphere fine-tuning clamp suitable for measuring spherical errors of a laser interferometer comprises a motor, a base, a gear mechanism, a transmission mechanism and a ball support; the motor is positioned below the base, an output shaft of the motor is connected with the gear mechanism positioned above the base through a through hole arranged in the center of the base, the ball support is fixed on the gear mechanism through uniformly distributed support rods and used for supporting a measured ball, and the gear mechanism is used for adjusting the position of the measured ball through a transmission mechanism positioned below the ball support;
the ball support comprises an upper ring and a lower ring which are fixed by a connecting piece, grooves are formed in the inner walls of the upper ring and the lower ring, balls are uniformly distributed in the grooves, the cross section of the upper ring is a rectangle with an inward-concave bottom edge, the cross section of the lower ring is a right trapezoid with an inward-concave bottom edge, the inner diameter of the upper ring is larger than that of the lower ring, the inner diameter of the lower ring is smaller than that of a circle formed by the contact point of the balls and a measured ball, and the highest point of the vertical transmission shaft is slightly lower than the lower end of the lower ring of the ball support;
the gear mechanism comprises a driving gear, a straight-tooth internal gear and a pinion; the upper end surface of the straight-tooth internal gear is welded and fixed with the lower ring of the ball support through uniformly distributed support rods, and the lower end surface of the straight-tooth internal gear is attached to the upper end surface of the base and is welded and fixed; the driving gear is arranged in the center of the upper end surface of the base and is connected with an output shaft of the motor, and when the motor drives the driving gear to rotate, the pinion which is engaged with the straight-tooth inner gear and the driving gear rotates in a circumferential manner in a planetary gear type structure;
the transmission mechanism comprises a transverse transmission shaft, a vertical transmission shaft and a curved support frame, wherein two ends of the curved support frame are respectively provided with a ring sleeve, the vertical transmission shaft and the transverse transmission shaft are arranged in the ring sleeves to be fixed, one end of the vertical transmission shaft and one end of the transverse transmission shaft are respectively provided with a bevel gear structure and are mutually meshed, the other end of the vertical transmission shaft is welded with the upper end face of a pinion, and the other end of the transverse transmission shaft is a free end; and a roller is arranged on the outer ring of the transverse transmission shaft.
Further, the ball is any one of a spherical ball, an annular air bag or a spherical air bag.
Furthermore, the outer ring of the roller is provided with a felt, a leather sleeve or a rubber sleeve.
The motor operates to drive the driving gear to rotate, so that a pinion meshed between the straight-tooth inner gear and the driving gear performs circumferential rotation in a planetary gear type structure, the vertical transmission shaft and the transverse transmission shaft are synchronously linked, the roller on the transverse transmission shaft stirs the measured ball body when rotating, and the transverse transmission shaft performs circumferential motion along with the pinion, so that the roller can fluctuate the measured ball body at different angles, and the spherical laser interferometer is assisted to measure the multi-angle laser interference surface morphology of the ball body.
The fixture can be matched with a spherical laser interferometer for use, is controlled by a motor, is high in transmission efficiency, and is stable in sphere positioning, the problem that the traditional fixture is low in adjustment precision and high in cost can be solved by assisting the spherical laser interferometer to measure the multi-angle laser interference surface morphology of the sphere, the fine adjustment precision of the sphere is further improved, and the fixture cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a spherical laser interference detection method;
FIG. 2 is a schematic diagram of a sphere fine-tuning fixture suitable for measuring spherical errors by a laser interferometer;
FIG. 3 is an exploded view of a sphere trimming fixture suitable for laser interferometer measurement of spherical errors;
FIG. 4 is an enlarged view of the middle structure;
FIG. 5 is a schematic view showing the positions of the ball holder, the ball and the ball to be measured;
FIG. 6 is a schematic view of the vertical drive shaft movement;
description of reference numerals: the device comprises a ball support 1, balls 2, a transverse transmission shaft 3, a curved support frame 4, a driving gear 5, a straight tooth internal gear 6, a motor 7, a base 8, a pinion 9, a vertical transmission shaft 10, a Laser11, a spatial filter 12, a spectroscope 13, a CCD14, a collimating objective 15, a spherical compensating mirror 16, a sphere 17 to be measured and a clamp system 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention.
A schematic diagram of a spherical Laser interference detection method is shown in FIG. 1, a Laser11 is emitted by a Laser interferometer, after spatial filtering 12, a test light beam passes through a spectroscope 13 and a collimating objective lens 15 in sequence, the test light beam emitted by the Laser interferometer is converted into parallel light, the test light beam emitted by the interferometer is converted into spherical waves through a spherical compensating mirror 16 again, a sphere 17 to be detected is clamped through a clamp system 18 to align the sphere center with the light beam focus, the sphere is normally incident on the spherical mirror to be detected and then returns along the original path, the sphere enters the interferometer to interfere with a reference light beam, a surface type error is detected through the Laser interference principle, and surface type detection of different areas on the surface of the sphere is realized through rotation of the sphere.
A schematic structural diagram of a sphere fine-tuning clamp suitable for measuring spherical errors by a laser interferometer is shown in FIG. 2, and the sphere fine-tuning clamp comprises a ball support 1, balls 2, a transverse transmission shaft 3, a curved support frame 4, a driving gear 5, a straight-tooth internal gear 6, a motor 7, a base 8, a pinion 9 and a vertical transmission shaft 10; the explosion diagram and the enlarged view of the middle part of the fine tuning fixture structure are respectively shown in fig. 3 and 4.
The schematic position diagrams of the ball support, the balls and the measured ball are shown in fig. 5, grooves are arranged on the inner walls of an upper circular ring and a lower circular ring of the ball support 1, the balls 2 which are uniformly distributed are arranged in the grooves, the measured ball is supported by the balls, the cross section of the upper circular ring is a rectangle with an inwards concave bottom edge, the cross section of the lower circular ring is a right trapezoid with an inwards concave bottom edge, the inner diameter of the upper circular ring is larger than that of the lower circular ring, the inner diameter of the lower circular ring is smaller than that of a circle formed by contact points of the balls and the measured ball, and the highest point of the vertical transmission shaft is slightly lower than the lower end of the; a through hole is formed in the center of the base 8, and the motor 7 is connected with the driving gear 5 through the through hole; the upper end face of the straight tooth inner gear 6 and the ball support 1 are welded and fixed through support rods which are uniformly distributed at equal intervals, and the lower end face of the straight tooth inner gear is welded with the base 8; the inner ring of the straight-tooth inner gear 6 is provided with tooth grooves, and the pinion 9 is arranged between the base 8 and the driving gear 5 and is respectively meshed with the base 8 and the driving gear 5;
one end of the vertical transmission shaft 10 and one end of the transverse transmission shaft 3 are both provided with bevel gear structures and are meshed with each other, the other end of the vertical transmission shaft 10 is welded with the upper end face of the pinion 9, and the other end of the transverse transmission shaft 3 is a free end; the outer ring of the transverse transmission shaft is provided with a roller, two ring sleeves are arranged at two ends of the curved support frame 4, which is contacted with the surface of the measured ball body, of the outer wall of the roller, and the vertical transmission shaft 10 and the transverse transmission shaft 3 are arranged in the ring sleeves to be fixed. And a roller is arranged on the outer ring of the transverse transmission shaft, a felt is arranged on the outer ring of the roller, and the felt is in contact with the surface of the measured ball body.
The utility model discloses the working process is as follows:
the motor operation drives the drive gear to rotate, make the pinion with straight-tooth internal gear and drive gear meshing do the circumferencial formula rotation with planet wheel structure, because the lower extreme vertical welding of vertical transmission shaft is at the upper surface of pinion, the pinion drives vertical transmission shaft and is the circumferencial formula rotation motion together when carrying out the circumferencial formula rotation, and there is little friction between bent shape support frame and the vertical transmission shaft, vertical transmission shaft drives horizontal transmission shaft through bent shape support frame and rotates on the horizontal plane, it touches the spheroid to the epaxial cylinder of horizontal transmission. As shown in fig. 6, the bevel gear at one end of the transverse transmission shaft is meshed with the bevel gear at the upper end of the vertical transmission shaft to drive the transverse transmission shaft to rotate on the vertical plane, the roller on the transverse transmission shaft is provided with a felt to stir the measured ball when rotating, and the transverse transmission shaft makes circular motion along with the pinion, so that the felt can stir the measured ball at different angles to assist the spherical laser interferometer to measure the multi-angle laser interference surface morphology of the ball.
Claims (3)
1. A sphere fine-tuning clamp suitable for measuring spherical errors of a laser interferometer is characterized by comprising a motor, a base, a gear mechanism, a transmission mechanism and a ball support; the motor is positioned below the base, an output shaft of the motor is connected with the gear mechanism positioned above the base through a through hole arranged in the center of the base, the ball support is fixed on the gear mechanism through uniformly distributed support rods and used for supporting a measured ball, and the gear mechanism is used for adjusting the position of the measured ball through a transmission mechanism positioned below the ball support;
the ball support comprises an upper ring and a lower ring which are fixed by a connecting piece, grooves are formed in the inner walls of the upper ring and the lower ring, balls (2) which are uniformly distributed are arranged in the grooves, the cross section of the upper ring is a rectangle with an inwards concave bottom edge, the cross section of the lower ring is a right trapezoid with an inwards concave bottom edge, the inner diameter of the upper ring is larger than that of the lower ring, the inner diameter of the lower ring is smaller than that of a circle formed by the contact point of the balls and a measured ball, and the highest point of the vertical transmission shaft is lower than the lower end of the lower ring of the ball support;
the gear mechanism comprises a driving gear (5), a straight-tooth internal gear (6) and a pinion (9); the upper end surface of the straight-tooth internal gear is welded and fixed with the lower ring of the ball support through uniformly distributed support rods, and the lower end surface of the straight-tooth internal gear is attached to the upper end surface of the base and is welded and fixed; the driving gear is arranged in the center of the upper end surface of the base and is connected with an output shaft of the motor, and when the motor drives the driving gear to rotate, the pinion which is engaged with the straight-tooth inner gear and the driving gear rotates in a circumferential manner in a planetary gear type structure;
the transmission mechanism comprises a transverse transmission shaft (3), a vertical transmission shaft (10) and a curved support frame (4), wherein two ends of the curved support frame are respectively provided with a ring sleeve, the vertical transmission shaft and the transverse transmission shaft are arranged in the ring sleeves to be fixed, one end of the vertical transmission shaft and one end of the transverse transmission shaft are both provided with bevel gear structures and are meshed with each other, the other end of the vertical transmission shaft is welded with the upper end face of a pinion, and the other end of the transverse transmission shaft is a free end; and a roller is arranged on the outer ring of the transverse transmission shaft.
2. The sphere fine-tuning jig suitable for the laser interferometer measurement of spherical errors as claimed in claim 1, wherein the ball is any one of a spherical ball, a toroidal balloon or a spherical balloon.
3. The sphere fine-tuning fixture suitable for laser interferometer measurement spherical errors as claimed in claim 1, wherein the outer ring of the roller is provided with a felt, leather sheath or rubber sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921253255.3U CN210119212U (en) | 2019-08-05 | 2019-08-05 | Sphere fine-adjustment clamp suitable for measuring spherical error by laser interferometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921253255.3U CN210119212U (en) | 2019-08-05 | 2019-08-05 | Sphere fine-adjustment clamp suitable for measuring spherical error by laser interferometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210119212U true CN210119212U (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921253255.3U Expired - Fee Related CN210119212U (en) | 2019-08-05 | 2019-08-05 | Sphere fine-adjustment clamp suitable for measuring spherical error by laser interferometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210119212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705000A (en) * | 2024-02-01 | 2024-03-15 | 天津市产品质量监督检测技术研究院 | Ball roundness detection device |
-
2019
- 2019-08-05 CN CN201921253255.3U patent/CN210119212U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705000A (en) * | 2024-02-01 | 2024-03-15 | 天津市产品质量监督检测技术研究院 | Ball roundness detection device |
| CN117705000B (en) * | 2024-02-01 | 2024-05-03 | 天津市产品质量监督检测技术研究院 | Ball roundness detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 Termination date: 20200805 |