CN111272123A - Device and method for detecting roundness and diameter of ball for measuring pin of coordinate measuring machine - Google Patents
Device and method for detecting roundness and diameter of ball for measuring pin of coordinate measuring machine Download PDFInfo
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- CN111272123A CN111272123A CN202010246994.0A CN202010246994A CN111272123A CN 111272123 A CN111272123 A CN 111272123A CN 202010246994 A CN202010246994 A CN 202010246994A CN 111272123 A CN111272123 A CN 111272123A
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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
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
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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
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
Abstract
The invention discloses a device and a method for detecting roundness and diameter of a ball for a measuring pin of a coordinate measuring machine, three measuring ball rod holes are arranged on the measuring ball clamping seat, and the axes of the three measuring ball rod holes are in the same plane, wherein the axes of two measuring ball rod holes are symmetrical about the axis of the other measuring ball rod hole, and the included angle of the axes of two adjacent measuring ball rod holes is 60 degrees, provides a measuring ball clamping seat structure capable of holding a coordinate measuring ball to be measured, then the working table of the cylindricity measuring instrument is fixedly connected with the measuring ball clamping seat, so that three measuring surfaces on the coordinate measuring ball to be measured can be directly determined and obtained through the measuring ball clamping seat, therefore, the clamping seat for mounting the measuring ball at one time is ensured, the measurement of three mutually vertical round surfaces of the same coordinate measuring ball to be measured can be realized, the measurement efficiency is greatly improved, and the interference problem caused by the movement of the measuring pin of the coordinate measuring machine is avoided.
Description
Technical Field
The invention belongs to the field of autonomous detection of a coordinate measuring machine measuring ball, and particularly relates to a device and a method for detecting roundness and diameter of a ball for a measuring pin of a coordinate measuring machine.
Background
Modern metering is an important technical foundation in national economic construction and national defense construction. The length measurement in the geometric quantity profession is closely close to the conditions of scientific research, production and assembly quality of the engine, and the method is a key focus field of engine quality control. The coordinate measuring ball is a standard device for calibrating a measuring head of the coordinate measuring machine, and the accuracy of the coordinate measuring ball directly influences the reliability of a measuring result of the coordinate measuring machine. The surface roughness of the coordinate measuring ball is generally not more than Ra0.05 mu m; the uncertainty of the measurement of the diameter of the coordinate measuring ball is determined by a sending and correcting unit and generally does not exceed 1/3 of the maximum allowable indicating value error of corresponding instrument equipment; the shape tolerance (roundness) of the coordinate measuring sphere is determined by the sending calibration unit and generally does not exceed 1/5 which is the maximum allowable detection error of the corresponding instrument and equipment. During measurement detection, the coordinate measuring ball needs to be measured and evaluated on three mutually perpendicular cross sections of the ball to be measured. At present, due to the fact that the coordinate measuring ball used in the method is various in structure and form, the roundness value of one section can be measured, and other two sections cannot be measured. In the next step of calibrating the diameter of the coordinate measuring ball, the diameter of the middle section can only be detected reluctantly, and when other section dimensions are measured, the problems of interference of a measuring seat and a measuring head exist. In combination with the measurement and evaluation requirements of three sections, the existing method cannot explain the real situation of the roundness of the whole coordinate measuring ball, and the measurement result cannot provide accurate data for the calibration of a measuring head of a coordinate measuring machine. Therefore, technical and tooling transformation is needed, and the problems of measuring head interference, clamping and comprehensive evaluation of three sections of the coordinate measuring ball are solved.
Disclosure of Invention
The invention aims to provide a device and a method for detecting roundness and diameter of a ball for a measuring pin of a coordinate measuring machine, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a kind of coordinate measuring machine survey needle uses the ball roundness and diameter detection device, including measuring the ball and installing the clamp, the lower end of measuring the ball and installing the clamp and fixedly connecting with upper mesa of the measuring apparatus work table of cylindricity, measure the middle part of upper end of ball and installing the clamp and having the first and measuring the ball hole, the upper end of measuring the ball and installing the clamp and locating at both sides of the first measuring ball hole and having the second and measuring the ball hole and the third measuring ball hole separately, the axis of the second measuring ball hole and third measuring ball hole is symmetrical about the first measuring ball hole axis, and the axis of the second measuring ball hole, third measuring ball hole and first measuring ball hole is in the identity level; the axis of the third measuring club hole forms an angle of 60 degrees with the axis of the first measuring club hole.
Furthermore, the second measuring ball rod hole, the third measuring ball rod hole and the first measuring ball rod hole are all threaded holes.
Furthermore, the upper end of the workbench of the cylindricity measuring instrument is provided with a sliding groove, the lower end of the measuring ball clamping seat is provided with a sliding block which is matched with the sliding groove to slide, the measuring ball clamping seat is provided with a threaded hole which runs through the sliding block, and the measuring ball clamping seat is fixed on the workbench of the cylindricity measuring instrument through a locking screw.
Furthermore, the upper end of the workbench of the cylindricity measuring instrument is provided with two parallel sliding chutes, and the lower end of the clamping seat of the measuring ball is provided with two parallel sliding blocks.
Furthermore, the upper end of the measuring ball clamping seat is provided with a V-shaped groove for horizontally placing a ball rod of the coordinate measuring ball to be measured, and the upper end of the measuring ball clamping seat is fixed with a compression cover through a bolt.
Furthermore, the central axis of the sliding groove on the workbench of the cylindricity measuring instrument passes through the center of the workbench of the cylindricity measuring instrument, and the axes of the second measuring ball rod hole, the third measuring ball rod hole and the first measuring ball rod hole on the measuring ball clamping seat are in the same plane with the central axis of the sliding groove on the workbench of the cylindricity measuring instrument.
Furthermore, the upper end face of one side of the sliding groove of the workbench of the cylindricity measuring instrument is provided with a central scale, and one side face of the clamping seat of the measuring ball is provided with an alignment scale which is used for aligning and positioning the central scale on the workbench of the cylindricity measuring instrument.
Furthermore, a pressing groove matched with the ball rod of the coordinate measuring ball to be measured is formed in the lower end face of the pressing cover.
A sphere section roundness detection method based on a sphere roundness detection device for a coordinate measuring machine measuring pin comprises the following steps:
step 1), selecting a measuring ball clamping seat according to the length of a ball rod of a coordinate measuring ball to be measured, and fixing the measuring ball clamping seat on a workbench of a cylindricity measuring instrument, so that the center of the coordinate measuring ball to be measured is positioned on a rotating shaft of the workbench of the cylindricity measuring instrument after the coordinate measuring ball to be measured is installed on the measuring ball clamping seat;
and 2) fixing the coordinate measuring ball to be measured in one of the first measuring ball rod hole, the second measuring ball rod hole or the third measuring ball rod hole, enabling a measuring pin of a coordinate measuring machine to be in surface contact with the coordinate measuring ball to be measured, enabling the measuring pin of the coordinate measuring machine to be in surface contact with the maximum rotating surface of the coordinate measuring ball to be measured, rotating a workbench of a cylindricity measuring instrument to complete measurement of the first circular surface of the coordinate measuring ball to be measured, and then fixing the coordinate measuring ball to be measured in the other two measuring ball rod holes in sequence to respectively complete measurement of the other two circular surfaces of the coordinate measuring ball to be measured.
A ball diameter detection method based on a ball roundness detection device for a coordinate measuring machine measuring pin comprises the following steps:
step 1), fixing a ball rod of a coordinate measuring ball to be measured in a V-shaped groove on a measuring ball clamping seat, and then fixing the measuring ball clamping seat on a length measuring machine measuring table to enable the center of the coordinate measuring ball to be measured to be located on a rotating axis of the length measuring machine measuring table;
step 2), moving two length measuring pins of the length measuring machine to enable the coordinate measuring ball to be measured to be located between the two length measuring pins, and adjusting the two length measuring pins of the length measuring machine to measure the diameter of the coordinate measuring ball to be measured in one direction; and then, rotating the length measuring machine measuring table, and moving the two length measuring pins of the length measuring machine to be unchanged in position, so as to realize the diameter measurement of the coordinate measuring ball to be measured at different angles.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a device for detecting roundness and diameter of a ball for a measuring pin of a coordinate measuring machine, which is characterized in that three measuring ball rod holes are arranged on a measuring ball clamping seat, the axes of the three measuring ball rod holes are in the same plane, wherein the axes of two measuring ball rod holes are symmetrical about the axis of the other measuring ball rod hole, and the included angle of the axes of two adjacent measuring ball rod holes is 60 degrees, provides a measuring ball clamping seat structure capable of holding a coordinate measuring ball to be measured, then the working table of the cylindricity measuring instrument is fixedly connected with the measuring ball clamping seat, so that three measuring surfaces on the coordinate measuring ball to be measured can be directly determined and obtained through the measuring ball clamping seat, therefore, the clamping seat for mounting the measuring ball at one time is ensured, the measurement of three mutually vertical round surfaces of the same coordinate measuring ball to be measured can be realized, the measurement efficiency is greatly improved, and the interference problem caused by the movement of the measuring pin of the coordinate measuring machine is avoided.
Furthermore, the second measuring ball rod hole, the third measuring ball rod hole and the first measuring ball rod hole are threaded holes, the connecting structure is stable, and the measuring result is not affected by shaking during measurement.
Furthermore, the upper end of the workbench of the cylindricity measuring instrument is provided with a sliding groove, the lower end of the measuring ball clamping seat is provided with a sliding block which is matched with the sliding groove to slide, a threaded hole which runs through the sliding block is formed in the measuring ball clamping seat, the measuring ball clamping seat is fixed on the workbench of the cylindricity measuring instrument through a locking screw, the center of the measuring ball of the coordinate measuring device to be measured can be adjusted before measurement and is positioned on the rotating axis of the workbench of the cylindricity measuring instrument, and the measuring ball is suitable for measuring coordinate measuring balls with different sizes.
Furthermore, the upper end of the workbench of the cylindricity measuring instrument is provided with two parallel sliding chutes, and the lower end of the clamping seat of the measuring ball is provided with two parallel sliding blocks.
Furthermore, the upper end of the measuring ball clamping seat is provided with a V-shaped groove for horizontally placing a ball rod of the coordinate measuring ball to be measured, the upper end of the measuring ball clamping seat is fixedly provided with a pressing cover through a bolt, the ball rod of the coordinate measuring ball to be measured is fixed by the pressing cover, the horizontal placement of the coordinate measuring ball to be measured is realized, the device can be used for measuring the diameter of the coordinate measuring ball to be measured, and the application of the device is improved.
A ball section roundness detection method based on a ball roundness detection device for a measuring pin of a coordinate measuring machine comprises the steps of selecting a measuring ball clamping seat according to the length of a ball rod of a coordinate measuring ball to be measured, fixing the measuring ball clamping seat on a workbench of a cylindricity measuring instrument, and enabling the center of the ball of the coordinate measuring ball to be measured to be located on a rotating shaft of the workbench of the cylindricity measuring instrument after the coordinate measuring ball to be measured is mounted on the measuring ball clamping seat; fixing a coordinate measuring ball to be measured in one of a first measuring ball rod hole, a second measuring ball rod hole or a third measuring ball rod hole, enabling a coordinate measuring machine measuring pin to be in surface contact with the coordinate measuring ball to be measured, enabling the coordinate measuring machine measuring pin to be in surface contact with the maximum rotation surface of the coordinate measuring ball to be measured, rotating a workbench of a cylindricity measuring instrument to complete measurement of the first circular surface of the coordinate measuring ball to be measured, and then fixing the coordinate measuring ball to be measured in the other two measuring ball rod holes in sequence to respectively complete measurement of the other two circular surfaces of the coordinate measuring ball to be measured.
The ball diameter detection method based on the ball roundness detection device for the measuring pin of the coordinate measuring machine can realize the diameter measurement of the coordinate measuring ball to be measured at different angles by one-time clamping, and is simple in measurement method, accurate in measurement result and capable of improving measurement efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a schematic view of an assembly structure of the pressing cover in the embodiment of the invention.
Fig. 5 is a left side view of fig. 4.
Wherein, 1, a measuring ball clamping seat is arranged; 2. a cylindricity measuring instrument worktable; 3. a first measuring club hole; 4. a second measuring club hole; 5. a third measuring club hole; 6. a chute; 7. locking the screw; 8. a V-shaped groove; 9. a coordinate measuring machine stylus; 10. a compression cover; 11. a bolt; 12. a coordinate measuring ball to be measured; 13. the length measuring machine measuring table.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 to 3, a device for detecting roundness and diameter of a ball for a stylus of a coordinate measuring machine comprises a measuring ball clamping seat 1, wherein the lower end of the measuring ball clamping seat 1 is fixedly connected with a workbench 2 of a cylindricity measuring instrument, a first measuring ball rod hole 3 is arranged in the middle of the upper end of the measuring ball clamping seat 1, a second measuring ball rod hole 4 and a third measuring ball rod hole 5 are respectively arranged at the two sides of the first measuring ball rod hole 3 at the upper end of the measuring ball clamping seat 1, the axes of the second measuring ball rod hole 4 and the third measuring ball rod hole 5 are symmetrical about the axis of the first measuring ball rod hole 3, and the axes of the second measuring ball rod hole 4, the third measuring ball rod hole 5 and the first measuring ball rod hole 3 are in the same plane; the included angle between the axis of the third measuring ball rod hole 5 and the axis of the first measuring ball rod hole 3 is 60 degrees, during measurement, the measuring ball clamping seat 1 is fixed on the cylindricity measuring instrument workbench 2, the axis of the first measuring ball rod hole 3 is coaxial with the rotation center of the cylindricity measuring instrument workbench 2, a ball rod of a coordinate measuring ball to be measured is fixed in the first measuring ball rod hole 3, at the moment, a coordinate measuring machine measuring pin 9 is in contact with the surface of the coordinate measuring ball to be measured, the cylindricity measuring instrument workbench 2 is rotated to complete measurement of a first circular surface (namely, a maximum circular cross section of the coordinate measuring ball to be measured) of the coordinate measuring ball to be measured, and then the coordinate measuring ball to be measured is sequentially and respectively fixed on the second measuring ball rod hole 4 and the third measuring ball rod hole 5 to complete measurement of other two circular surfaces; the distance from the axis intersection point of the second measuring ball rod hole 4, the third measuring ball rod hole 5 and the first measuring ball rod hole 3 to the surface of the second measuring ball rod hole 4, the distance from the axis intersection point to the surface of the first measuring ball rod hole 3 are the same as the distance from the center of the coordinate measuring ball to be measured to the surface of the first measuring ball rod hole 3 after the coordinate measuring ball to be measured is installed, namely, the circle center of the coordinate measuring ball to be measured is on the rotating axis of the cylindricity measuring instrument worktable 2 when the coordinate measuring ball to be measured is installed in the second measuring ball rod hole 4, the third measuring ball rod hole 5 and the first measuring ball rod hole 3, so that the measuring ball clamping seat 1 is ensured to be installed at one time, the measurement of three mutually perpendicular circular surfaces of the same coordinate measuring ball to be measured can be realized, and the measuring efficiency is greatly improved. The coordinate measuring balls to be measured with different specifications adopt measuring ball clamping seats 1 with different specifications.
The second measuring ball rod hole 4, the third measuring ball rod hole 5 and the first measuring ball rod hole 3 are threaded holes, so that the ball rod of the coordinate measuring ball is fixed and connected conveniently.
Specifically, the upper end of a workbench 2 of the cylindricity measuring instrument is provided with a chute 6, the lower end of a measuring ball clamping seat 1 is provided with a sliding block which is matched with the chute to slide, the measuring ball clamping seat 1 is provided with a threaded hole which penetrates through the sliding block, a locking screw 7 is arranged in the threaded hole, the measuring ball clamping seat 1 can slide along the chute 6 on the workbench 2 of the cylindricity measuring instrument so as to adjust the position of the measuring ball clamping seat 1 on the workbench 2 of the cylindricity measuring instrument, the locking screw 7 is locked by the locking screw 7, the locking screw 7 is matched with the threaded hole on the measuring ball clamping seat 1 to rotate until the end part of the locking screw 7 is contacted with the bottom of the chute of the workbench 2 of; the upper end of the workbench 2 of the cylindricity measuring instrument is provided with two parallel chutes 6, the lower end of the measuring ball clamping seat 1 is provided with two parallel sliding blocks, when the circle center of the coordinate measuring ball to be measured is not on the rotation axis of the workbench 2 of the cylindricity measuring instrument after being installed, the circle center position of the coordinate measuring ball to be measured is determined by sliding the sliding blocks of the measuring ball clamping seat 1 and the workbench 2 of the cylindricity measuring instrument, and the device is fast and convenient.
The central axis of the sliding groove on the working table 2 of the cylindricity measuring instrument passes through the center of the working table 2 of the cylindricity measuring instrument, the second measuring ball rod hole 4 on the measuring ball clamping seat 1, the axis of the third measuring ball rod hole 5 and the first measuring ball rod hole 3 is in the same plane with the central axis of the sliding groove on the working table 2 of the cylindricity measuring instrument, namely, when the measuring ball clamping seat 1 slides on the working table 2 of the cylindricity measuring instrument, the axis of the first measuring ball rod hole 3 can coincide with the rotating axis of the working table 2 of the cylindricity measuring instrument, and the measurement of one circular surface of the coordinate measuring ball to be measured fixed in the first measuring ball rod hole 3 can be realized.
The upper end face of one side of the sliding groove of the cylindricity measuring instrument workbench 2 is provided with a central scale, one side face of the measuring ball clamping seat 1 is provided with an alignment scale, a zero-degree scale line of the alignment scale on the measuring ball clamping seat 1 is a plane where an axis of a first measuring ball rod hole is located, when the zero-degree scale line of the alignment scale on the measuring ball clamping seat 1 is aligned with the central scale on the cylindricity measuring instrument workbench 2, the axis of the first measuring ball rod hole on the measuring ball clamping seat 1 is coaxial with the rotating axis of the cylindricity measuring instrument workbench 2, so that the measuring ball clamping seat 1 can be quickly positioned when sliding on the cylindricity measuring instrument workbench 2.
A sphere section roundness detection method based on a sphere roundness detection device for a coordinate measuring machine measuring pin comprises the following steps:
step 1), selecting a measuring ball clamping seat according to the length of a ball rod of a coordinate measuring ball to be measured, and fixing the measuring ball clamping seat on a workbench of a cylindricity measuring instrument, so that the center of the coordinate measuring ball to be measured is positioned on a rotating shaft of the workbench of the cylindricity measuring instrument after the coordinate measuring ball to be measured is installed on the measuring ball clamping seat;
and 2) fixing the coordinate measuring ball to be measured in one of the first measuring ball rod hole, the second measuring ball rod hole or the third measuring ball rod hole, enabling a measuring pin of a coordinate measuring machine to be in surface contact with the coordinate measuring ball to be measured, enabling the measuring pin of the coordinate measuring machine to be in surface contact with the maximum rotating surface of the coordinate measuring ball to be measured, rotating a workbench of a cylindricity measuring instrument to complete measurement of the first circular surface of the coordinate measuring ball to be measured, and then fixing the coordinate measuring ball to be measured in the other two measuring ball rod holes in sequence to respectively complete measurement of the other two circular surfaces of the coordinate measuring ball to be measured.
As shown in fig. 4 and 5, the upper end of the measuring ball clamping seat 1 is provided with a V-shaped groove 8 for horizontally placing a ball rod of the coordinate measuring ball to be measured, the upper end of the measuring ball clamping seat 1 is fixed with a pressing cover 10 through a bolt 11, the lower end surface of the pressing cover 10 is provided with a pressing groove matched with the ball rod of the coordinate measuring ball 12 to be measured, the ball rod of the coordinate measuring ball 12 to be measured is fixed in the V-shaped groove 8 of the measuring ball clamping seat 1 and can be used for measuring the diameter of the coordinate measuring ball 12 to be measured, when the diameter of the coordinate measuring ball 12 to be measured needs to be measured, the measuring ball clamping seat 1 is fixed on a length measuring machine measuring table 13, the length measuring machine measuring table 13 and a cylindricity measuring instrument worktable 2 have the same structure, the measuring ball clamping seat 1 can be installed between the two in a matching way, so that the center of the coordinate measuring ball 12 fixed on the measuring ball clamping seat 1 is on a rotating shaft of, the coordinate measuring ball 12 to be measured is positioned between two measuring long needles of the length measuring machine, the coordinate measuring ball 12 to be measured is ensured to be immobile, the two measuring long needles are moved along the horizontal direction to obtain the maximum measured value of the coordinate measuring ball 12 to be measured in the horizontal direction, then the two measuring long needles are vertically moved at the maximum measured value in the horizontal direction to obtain the maximum measured value in the vertical direction, namely the diameter of the coordinate measuring ball 12 to be measured at the measuring angle, the diameter measurement of the coordinate measuring ball 12 to be measured is realized, the length measuring machine measuring table is rotated to realize the diameter measurement on different circular surfaces of the coordinate measuring ball 12 to be measured, the diameter measurement on different circular surfaces of the coordinate measuring ball 12 to be measured can be realized by sequentially clamping, the error caused by displacement of the coordinate measuring ball 12 to be measured in the detection process is reduced, the error caused by movement of the measuring instrument due to overlarge measurement in the measurement process is avoided, the measuring ball clamping seat 1 can carry out angle transformation on the, so as to meet the measurement requirement and improve the detection accuracy.
A ball diameter detection method based on a ball roundness detection device for a coordinate measuring machine measuring pin comprises the following steps:
step 1), fixing a ball rod of a coordinate measuring ball to be measured in a V-shaped groove on a measuring ball clamping seat, and then fixing the measuring ball clamping seat on a length measuring machine measuring table 13 to enable the center of the coordinate measuring ball to be measured to be located on a rotating axis of the length measuring machine measuring table 13;
step 2), moving two length measuring pins of the length measuring machine to enable the coordinate measuring ball to be measured to be located between the two length measuring pins, and adjusting the two length measuring pins of the length measuring machine to measure the diameter of the coordinate measuring ball to be measured in one direction; and then, rotating the length measuring machine measuring table 13, and moving the two length measuring pins of the length measuring machine to be unchanged in position, so as to realize the diameter measurement of the coordinate measuring ball to be measured at different angles.
Claims (10)
1. The device for detecting the roundness and the diameter of the ball for the measuring pin of the coordinate measuring machine is characterized by comprising a measuring ball clamping seat (1), wherein the lower end of the measuring ball clamping seat (1) is fixedly connected with the upper table surface of a cylindricity measuring instrument workbench (2), a first measuring ball rod hole (3) is formed in the middle of the upper end of the measuring ball clamping seat (1), a second measuring ball rod hole (4) and a third measuring ball rod hole (5) are respectively formed in the upper end of the measuring ball clamping seat (1) and positioned on two sides of the first measuring ball rod hole (3), the axes of the second measuring ball rod hole (4) and the third measuring ball rod hole (5) are symmetrical about the axis of the first measuring ball rod hole (3), and the axes of the second measuring ball rod hole (4), the third measuring ball rod hole (5) and the first measuring ball rod hole (3) are in the same plane; the included angle between the axis of the third measuring ball rod hole (5) and the axis of the first measuring ball rod hole (3) is 60 degrees.
2. The roundness and diameter detection device for a pin of a coordinate measuring machine according to claim 1, wherein the second measuring ball rod hole (4), the third measuring ball rod hole (5) and the first measuring ball rod hole (3) are all threaded holes.
3. The device for detecting the roundness and the diameter of the ball for the stylus of the coordinate measuring machine according to claim 1, wherein a sliding groove (6) is formed at the upper end of the working table (2) of the cylindricity measuring machine, a sliding block which is matched with the sliding groove and slides is arranged at the lower end of the clamping seat (1) of the measuring ball, a threaded hole which penetrates through the sliding block is formed in the clamping seat (1) of the measuring ball, and the clamping seat (1) of the measuring ball is fixed on the working table (2) of the cylindricity measuring machine through a locking screw (7).
4. The device for detecting the roundness and diameter of a ball for a stylus of a coordinate measuring machine according to claim 3, wherein the upper end of the worktable (2) of the cylindricity measuring machine is provided with two parallel sliding grooves (6), and the lower end of the clamping seat (1) of the measuring ball is provided with two parallel sliding blocks.
5. The device for detecting the roundness and the diameter of the ball for the measuring pin of the coordinate measuring machine according to claim 3, wherein a V-shaped groove (8) for horizontally placing a ball rod of the coordinate measuring ball to be measured is formed at the upper end of the measuring ball clamping seat (1), and a pressing cover (10) is fixed at the upper end of the measuring ball clamping seat (1) through a bolt (11).
6. The device for detecting the roundness and the diameter of the ball for the stylus of the coordinate measuring machine according to claim 1, wherein the central axis of the chute on the worktable (2) of the cylindricity measuring machine passes through the center of the worktable (2) of the cylindricity measuring machine, and the axes of the second measuring ball rod hole (4), the third measuring ball rod hole (5) and the first measuring ball rod hole (3) on the clamping seat (1) of the measuring ball are in the same plane as the central axis of the chute on the worktable (2) of the cylindricity measuring machine.
7. The roundness and diameter detecting device for a ball for a stylus of a coordinate measuring machine according to claim 1, wherein a central scale is provided on an upper end surface of one side of the chute of the table (2) of the cylindricity measuring instrument, and an alignment scale for aligning and positioning the central scale on the table (2) of the cylindricity measuring instrument is provided on one side of the clamping seat (1) of the measuring ball.
8. The roundness and diameter detection apparatus for a pin of a coordinate measuring machine according to claim 7, wherein the lower end surface of the pressing cover (10) is provided with a pressing groove matched with a ball rod of the coordinate measuring ball (12) to be measured.
9. A method for detecting roundness of a spherical section of a ball based on the apparatus for detecting roundness of a ball for a stylus of a coordinate measuring machine according to claim 1, comprising the steps of:
step 1), selecting a measuring ball clamping seat according to the length of a ball rod of a coordinate measuring ball to be measured, and fixing the measuring ball clamping seat on a workbench of a cylindricity measuring instrument, so that the center of the coordinate measuring ball to be measured is positioned on a rotating shaft of the workbench of the cylindricity measuring instrument after the coordinate measuring ball to be measured is installed on the measuring ball clamping seat;
and 2) fixing the coordinate measuring ball to be measured in one of the first measuring ball rod hole, the second measuring ball rod hole or the third measuring ball rod hole, enabling a measuring pin of a coordinate measuring machine to be in surface contact with the coordinate measuring ball to be measured, enabling the measuring pin of the coordinate measuring machine to be in surface contact with the maximum rotating surface of the coordinate measuring ball to be measured, rotating a workbench of a cylindricity measuring instrument to complete measurement of the first circular surface of the coordinate measuring ball to be measured, and then fixing the coordinate measuring ball to be measured in the other two measuring ball rod holes in sequence to respectively complete measurement of the other two circular surfaces of the coordinate measuring ball to be measured.
10. A ball diameter detection method based on the ball roundness detection apparatus for a stylus of a coordinate measuring machine according to claim 5, characterized by comprising the steps of:
step 1), fixing a ball rod of a coordinate measuring ball to be measured in a V-shaped groove on a measuring ball clamping seat, and then fixing the measuring ball clamping seat on a length measuring machine measuring table to enable the center of the coordinate measuring ball to be measured to be located on a rotating axis of the length measuring machine measuring table;
step 2), moving two length measuring pins of the length measuring machine to enable the coordinate measuring ball to be measured to be located between the two length measuring pins, and adjusting the two length measuring pins of the length measuring machine to measure the diameter of the coordinate measuring ball to be measured in one direction; and then, rotating the length measuring machine measuring table, and moving the two length measuring pins of the length measuring machine to be unchanged in position, so as to realize the diameter measurement of the coordinate measuring ball to be measured at different angles.
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| CN202010246994.0A CN111272123A (en) | 2020-03-31 | 2020-03-31 | Device and method for detecting roundness and diameter of ball for measuring pin of coordinate measuring machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161550A (en) * | 2020-09-23 | 2021-01-01 | 湖南恒岳重钢钢结构工程有限公司 | Roundness detection device for wind power tower cylinder |
| CN113899331A (en) * | 2021-09-23 | 2022-01-07 | 成都齐平科技有限公司 | Batch ball detection device and ball diameter difference detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112161550A (en) * | 2020-09-23 | 2021-01-01 | 湖南恒岳重钢钢结构工程有限公司 | Roundness detection device for wind power tower cylinder |
| CN112161550B (en) * | 2020-09-23 | 2022-11-29 | 湖南恒岳重钢钢结构工程有限公司 | Wind power tower cylinder roundness detection device |
| CN113899331A (en) * | 2021-09-23 | 2022-01-07 | 成都齐平科技有限公司 | Batch ball detection device and ball diameter difference detection method |
| CN113899331B (en) * | 2021-09-23 | 2024-04-09 | 成都齐平科技有限公司 | Ball batch detection device and ball diameter difference detection method |
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Application publication date: 20200612 |