CN113670243A - Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors - Google Patents

Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors Download PDF

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Publication number
CN113670243A
CN113670243A CN202111058554.3A CN202111058554A CN113670243A CN 113670243 A CN113670243 A CN 113670243A CN 202111058554 A CN202111058554 A CN 202111058554A CN 113670243 A CN113670243 A CN 113670243A
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CN
China
Prior art keywords
revolving body
coordinate measuring
measuring machine
measuring
motion
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Pending
Application number
CN202111058554.3A
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Chinese (zh)
Inventor
张之敬
张琪
金鑫
张高阳
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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Priority to CN202111058554.3A priority Critical patent/CN113670243A/en
Publication of CN113670243A publication Critical patent/CN113670243A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/04Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/04Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
    • G01B21/047Accessories, e.g. for positioning, for tool-setting, for measuring probes

Abstract

The invention relates to the technical field of three-coordinate measuring machines and discloses a three-coordinate measuring machine special for detecting parts of revolution bodies and modeling errors. The three-coordinate measuring machine is additionally provided with the rotary table aiming at the measurement characteristics of the revolving body part, and the part is arranged on the rotary table to rotate, so that the movement time of a measuring head of the three-coordinate measuring machine in the measurement process is reduced, the efficiency of measuring the revolving body type part is improved, and the production time of a factory is further reduced. The three-coordinate measuring machine realizes on-line detection, and the measured data is input data of subsequent workpiece error modeling.

Description

Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors
Technical Field
The invention relates to the field of three-coordinate measurement, in particular to a three-coordinate measuring machine special for detecting and error modeling of a revolving body part.
Background
Three-coordinate measuring equipment is a common equipment in industrial measurement, and can be used for measuring geometric shape, length, roundness graduation and the like. The three-coordinate measuring machine can replace various surface measuring tools to carry out high-precision measurement on a measuring target, and the measuring functions comprise size precision, positioning precision, geometric precision, contour precision and the like. But the existing three-coordinate measurement focuses on the expansion of the application range, and the function capable of being used for measuring workpieces with more shapes tends to be developed. For revolving body parts, such as an aircraft engine casing, the traditional three-coordinate measurement consumes long time and has low measurement efficiency, and the fast rhythm of industrial production cannot be met.
Therefore, the development of a three-coordinate measuring machine suitable for detecting and error modeling of a revolving body part is a problem which needs to be solved urgently by those skilled in the art at present. The rotary table has the advantages of high precision and small shaft jump and radial jump, so that the rotary table is selected as a rotary shaft of a workpiece to be measured.
Disclosure of Invention
In order to solve the technical problems, the invention provides a three-coordinate measuring machine special for detecting and error modeling of a revolving body part, which adopts the mechanical structure of the traditional three-coordinate measuring machine, embeds a rotary table into a marble platform, and quickly acquires the characteristic data of the surface of the revolving body part in a four-axis linkage mode.
The invention is realized by the following technical scheme
The three-coordinate measuring machine comprises supporting legs, a marble platform, a rotary table, a clamp, a stand column, an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism and a contact sensor, wherein the contact sensor comprises measuring pins in the horizontal direction and the vertical direction, and the three-coordinate measuring machine is further connected with a computer through a cable.
The invention discloses a method for measuring the cylindrical surface of a revolving body part of a three-coordinate measuring machine special for revolving body part detection and error modeling, which comprises the following steps:
(1) and (3) mounting the revolving body workpiece on a clamp, and performing self-centering on the revolving body workpiece through the clamp.
(2) The length of the measuring needle is adjusted to avoid collision.
(3) And moving the X-axis motion mechanism and the Y-axis motion mechanism to enable the sensor to be positioned above the rotating center of the rotary table.
(4) And moving the Z-axis movement mechanism to enable the sensor to descend to the cylindrical surface to be detected.
(5) The X-axis movement mechanism (or the Y-axis movement mechanism) advances until the touch sensor is triggered, and then returns to the rotation center of the turntable.
(6) Rotation of the turntable
(7) Repeating (5) and (6) until the current circumference measurement is finished
(8) Z-axis descent
(9) Repeating the steps (5), (6), (7) and (8) until the current cylindrical surface is measured
The above steps are the steps of measuring the cylindrical surface, and the following is the measuring method of the ring plane of the revolving body part of the three-coordinate measuring machine special for revolving body part detection and error modeling, which is disclosed by the invention:
(1) and (3) mounting the revolving body workpiece on a clamp, and performing self-centering on the revolving body workpiece through the clamp.
(2) The length of the measuring needle is adjusted to avoid collision.
(3) And moving the X-axis motion mechanism and the Y-axis motion mechanism to enable the sensor to be positioned above the ring surface of the revolving body part to be detected.
(4) The Z-axis motion advances until the touch sensor is triggered and then rises 20 mm.
(5) The turntable is rotated.
(6) And (5) repeating the steps (6) until the current circumference is measured.
(7) An X-axis movement mechanism (or a Y-axis movement mechanism) moving in the unmeasured circumferential direction
(8) And (5) repeating the steps (4), (6) and (7) until the current cylindrical surface is measured.
By adopting the scheme, the three-coordinate measuring machine special for detecting the revolving body part and modeling the error reduces the measuring time of the revolving body part by integrally planning the rotation of the revolving body part and the movement of the contact type sensor.
Drawings
FIG. 1 is a schematic diagram of a three-coordinate measuring machine specially used for detecting and error modeling of a revolving body part.
Fig. 2 is a schematic diagram of a revolving body workpiece clamping mode of the three-coordinate measuring machine special for revolving body part detection and error modeling.
FIG. 3 is a schematic diagram of a contact time sensor of a three-coordinate measuring machine specially used for detecting and error modeling of a revolving body part in the invention
The method comprises the following steps of 1-supporting legs, 2-marble platforms, 3-rotary tables, 4-workpieces, 5-clamps, 6-X-axis motion mechanisms, 7-vertical columns, 8-Y-axis motion mechanisms, 9-Z-axis motion mechanisms, 10-contact sensors, 11-horizontal measuring pins, 12-star measuring seats, 13-vertical measuring pins and 14-measuring heads.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of the claimed invention is not limited thereto.
As shown in FIG. 1, the three-coordinate measuring machine special for detecting and error modeling of a revolving body part comprises a supporting leg 1, a marble platform 2, a rotary table 3, a clamp 5, an X-axis movement mechanism 6, an upright post 7, a Y-axis movement mechanism 8, a Z-axis movement mechanism 9 and a contact type sensor 10. As shown in fig. 2, the touch sensor 10 includes a horizontal stylus 11, a star-shaped probe base 12, a vertical stylus 13, and a probe 14. The measuring method of the revolving body part comprises the following steps:
(1) and (3) mounting the revolving body workpiece on a clamp, and performing self-centering on the revolving body workpiece through the clamp.
(2) The length of the measuring needle is adjusted to avoid collision.
(3) And moving the X-axis motion mechanism and the Y-axis motion mechanism to enable the sensor to be positioned above the rotating center of the rotary table.
(4) And moving the Z-axis movement mechanism to enable the sensor to descend to the cylindrical surface to be detected.
(5) The X-axis movement mechanism (or the Y-axis movement mechanism) advances until the touch sensor is triggered, and then returns to the rotation center of the turntable.
(6) Rotation of the turntable
(7) Repeating (5) and (6) until the current circumference measurement is finished
(8) Z-axis descent
(9) Repeating the steps (5), (6), (7) and (8) until the current cylindrical surface is measured
The above steps are the steps of measuring the cylindrical surface, and the following is the measuring method of the ring plane of the revolving body part of the three-coordinate measuring machine special for revolving body part detection and error modeling, which is disclosed by the invention:
(1) and (3) mounting the revolving body workpiece on a clamp, and performing self-centering on the revolving body workpiece through the clamp.
(2) The length of the measuring needle is adjusted to avoid collision.
(3) And moving the X-axis motion mechanism and the Y-axis motion mechanism to enable the sensor to be positioned above the ring surface of the revolving body part to be detected.
(4) The Z-axis motion advances until the touch sensor is triggered and then rises 20 mm.
(5) The turntable is rotated.
(6) And (5) repeating the steps (6) until the current circumference is measured.
(7) An X-axis movement mechanism (or a Y-axis movement mechanism) moving in the unmeasured circumferential direction
(8) And (5) repeating the steps (4), (6) and (7) until the current cylindrical surface is measured.
In the description of the present invention, it is to be understood that the terms "X-axis", "Y-axis", "Z-axis", etc., indicating orientations are based on the orientations and positional relationships shown in the drawings of the present invention, are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention.
In summary, the present invention provides a three-coordinate measuring machine dedicated for detecting and error modeling of revolving body parts, which reduces the measuring time of revolving body parts by coordinating the revolving of revolving body parts and the movement of contact sensors.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.

Claims (5)

1. The utility model provides a three-coordinate measuring machine of solid of revolution part detection and error modeling is exclusively used in, includes supporting leg (1), its characterized in that: support three-coordinate measuring machine main part, with marble platform (2) lug connection, processing has the frock hole in the middle of marble platform (2) for installation revolving stage (3), install on revolving stage (3) and be used for fixed anchor clamps (5) of work piece, the installation workpiece to be measured (4) on the anchor clamps, marble platform side is X axle motion (6), X axle motion (6) are connected with stand (7), Y axle motion (8) are installed to stand (7) top, Y axle motion (8) are connected with Z axle motion (9), Z axle motion below is connected with contact sensor (10). The marble platform (2) is horizontally arranged, the motion directions of the Y-axis motion mechanism (8) and the X-axis motion mechanism (6) are positioned in a horizontal plane, and the Z-axis motion mechanism (9) is positioned in a vertical direction and conforms to a right-hand rectangular coordinate system; each linear shaft is provided with a guide rail and a grating ruler so as to ensure the motion stability and the displacement precision of each linear shaft. The contact type sensor (10) is connected with the star-shaped measuring needle through a non-rotatable measuring seat, and when a higher revolving body part needs to be measured, an extension rod can be additionally arranged to prolong the measuring range.
2. A three-coordinate measuring machine dedicated to detection and error modeling of revolved body parts, according to claim 1, wherein said coordinate moving assembly comprises: a linear motion shaft: an X-axis motion mechanism (6), a Y-axis motion mechanism (8) and a Z-axis motion mechanism (9); a rotational motion shaft: a turntable (3). The touch sensor (10) includes: the measuring head (14), the horizontal measuring needle (11), the vertical measuring needle (13) and the star-shaped measuring base (12).
3. Touch sensor (10) according to claim 2, characterized by two mutually perpendicular horizontal (11) and vertical (13) pins.
4. The turntable (3) according to claim 1 is provided with a clamp (5) for self-centering of the workpiece (4) to be measured.
5. A three-coordinate measuring machine for testing and error modeling of revolving body parts as claimed in claim 1, wherein the measured data is subjected to error modeling and graphic display of the north surface.
CN202111058554.3A 2021-09-10 2021-09-10 Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors Pending CN113670243A (en)

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Application Number Priority Date Filing Date Title
CN202111058554.3A CN113670243A (en) 2021-09-10 2021-09-10 Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111058554.3A CN113670243A (en) 2021-09-10 2021-09-10 Three-coordinate measuring machine special for detecting parts of revolving body and modeling errors

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114485506A (en) * 2022-02-17 2022-05-13 王威 Automatic feeding device for three-coordinate detection of automobile engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202869440U (en) * 2012-11-02 2013-04-10 天津大学 Five-shaft system solid of revolution measuring instrument
CN109458958A (en) * 2018-12-21 2019-03-12 中国航空工业集团公司北京航空精密机械研究所 A kind of scaling method of turntable center position in four axis vision measurement device
CN110108208A (en) * 2019-05-16 2019-08-09 博众精工科技股份有限公司 The error compensating method of five axis non-contact measurement machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202869440U (en) * 2012-11-02 2013-04-10 天津大学 Five-shaft system solid of revolution measuring instrument
CN109458958A (en) * 2018-12-21 2019-03-12 中国航空工业集团公司北京航空精密机械研究所 A kind of scaling method of turntable center position in four axis vision measurement device
CN110108208A (en) * 2019-05-16 2019-08-09 博众精工科技股份有限公司 The error compensating method of five axis non-contact measurement machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114485506A (en) * 2022-02-17 2022-05-13 王威 Automatic feeding device for three-coordinate detection of automobile engine
CN114485506B (en) * 2022-02-17 2024-04-16 扬州嘉恒机械制造有限公司 Automatic feeding device for three-coordinate detection of automobile engine

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