CN214173239U - High-precision measuring device for straightness of cylindrical bus - Google Patents

High-precision measuring device for straightness of cylindrical bus Download PDF

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Publication number
CN214173239U
CN214173239U CN202120514943.1U CN202120514943U CN214173239U CN 214173239 U CN214173239 U CN 214173239U CN 202120514943 U CN202120514943 U CN 202120514943U CN 214173239 U CN214173239 U CN 214173239U
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China
Prior art keywords
displacement sensor
cylindrical
measuring
air
inductive displacement
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CN202120514943.1U
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Chinese (zh)
Inventor
蒋家东
雷天才
任松
钟文勇
杨维川
刘波
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Institute of Machinery Manufacturing Technology China Academy of Engineering Physics
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Institute of Machinery Manufacturing Technology China Academy of Engineering Physics
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Abstract

The utility model discloses a cylinder generating line straightness accuracy high accuracy measuring device relates to the geometric quantity measurement field, and its technical scheme main points are: the device comprises an air-floating guide rail, an air-floating slide block, a supporting assembly, an inductive displacement sensor and a measuring terminal; the air floatation sliding block is movably connected with the air floatation guide rail and is sleeved with a driving lead screw arranged in the air floatation guide rail, and a positioning seat is arranged at the top of the air floatation sliding block; the support assembly is fixedly connected with the air floatation guide rail, the inductive displacement sensor is connected with the support assembly, and a cylindrical surface measuring head positioned above the positioning seat is arranged at the end part of the inductive displacement sensor; the axial direction of the cylindrical surface measuring head is vertical to the axial direction of the driving screw rod; the inductance displacement sensor is electrically connected with the measuring terminal. The utility model discloses can be high-efficient, accurate measure the straightness accuracy of many curved cylinders such as single curved cylinder, hyperbolic cylinder, straightness accuracy measurement error is little.

Description

High-precision measuring device for straightness of cylindrical bus
Technical Field
The utility model relates to a geometric quantity measurement field, more specifically say, it relates to a cylinder generating line straightness accuracy high accuracy measuring device.
Background
The cylindrical surface is a basic part which is often needed in key parts of an analytical mass spectrometer such as an ion trap, and the cylindrical surface can be a hyperboloid or a single curved surface. High accuracy of the measurement of the linearity is essential to know the quality of the machining or assembly.
However, since the hyperbolic cylinder is not a rotator, the roundness measuring instrument cannot measure the straightness thereof, and when three-coordinate detection is used, a high measurement reference surface is required to ensure that a measurement point of the coordinate measuring machine moves on one bus during measurement, but since the hyperbolic cylinder only has a precision requirement on the hyperbolic cylinder during use, the machining precision requirement of the reference during machining of the general hyperbolic cylinder is not high, that is, the precision of the hyperbolic cylinder is irrelevant to the reference, which causes a deviation when the coordinate measuring machine measures the straightness of non-cylindrical surfaces such as the hyperbolic cylinder.
Therefore, how to research and design a cylindrical bus straightness accuracy high-precision measuring device is a problem which is urgently needed to be solved at present.
SUMMERY OF THE UTILITY MODEL
For solving the not enough among the prior art, the utility model aims at providing a cylinder generating line straightness accuracy high accuracy measuring device.
The above technical purpose of the present invention can be achieved by the following technical solutions: a high-precision measuring device for the straightness of a cylindrical bus comprises an air floatation guide rail, an air floatation sliding block, a supporting assembly, an inductive displacement sensor and a measuring terminal;
the air floatation sliding block is movably connected with the air floatation guide rail and is sleeved with a driving lead screw arranged in the air floatation guide rail, and a positioning seat is arranged at the top of the air floatation sliding block;
the support assembly is fixedly connected with the air floatation guide rail, the inductive displacement sensor is connected with the support assembly, and a cylindrical surface measuring head positioned above the positioning seat is arranged at the end part of the inductive displacement sensor;
the axial direction of the cylindrical surface measuring head is vertical to the axial direction of the driving screw rod;
the inductance displacement sensor is electrically connected with the measuring terminal.
Further, the measuring terminal comprises a data processing unit and a display unit;
the data processing unit is used for converting the measurement signals acquired by the inductance displacement sensor into straightness measurement results;
and the display unit is used for displaying the linearity measurement result.
Further, the supporting component comprises a stand column and a clamping piece used for clamping the inductance displacement sensor, and the clamping piece is sleeved with the stand column and fixed through a locking screw.
Furthermore, the clamping piece comprises a clamping sleeve and a side head clamp which are respectively connected with the upright post and the inductive displacement sensor, the clamping sleeve and the side head clamp are rotationally connected through a stud, and the side head clamp and the inductive displacement sensor are fixed through a locking screw.
Furthermore, the surface of the positioning seat is provided with a placing groove arranged along the axial direction of the driving screw rod.
Further, the placing groove is a V-shaped groove.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses can be high-efficient, accurate measure the straightness accuracy of many curved cylinders such as single curved cylinder, hyperbolic cylinder, straightness accuracy measurement error is little.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the placement groove in the embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
101. an air-float guide rail; 102. an air-floating slide block; 103. positioning seats; 104. a cylindrical surface workpiece; 105. placing a groove; 201. a column; 202. a jacket; 203. a stud; 204. a lateral head clamp; 205. locking the screw; 301. an inductive displacement sensor; 302. a cylindrical surface measuring head; 303. a measuring terminal; 304. a data processing unit; 305. a display unit.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example (b): a high-precision measurement device for the straightness of a cylindrical bus is shown in FIG. 1 and comprises an air-floating guide rail 101, an air-floating slide block 102, a support assembly, an inductive displacement sensor 301 and a measurement terminal 303. The air-floating slide block 102 is movably connected with the air-floating guide rail 101, the air-floating slide block 102 is sleeved with a driving lead screw arranged in the air-floating guide rail 101, and the top of the air-floating slide block 102 is provided with a positioning seat 103. The supporting assembly is fixedly connected with the air floatation guide rail 101, the inductive displacement sensor 301 is connected with the supporting assembly, and a cylindrical measuring head 302 located above the positioning seat 103 is arranged at the end part of the inductive displacement sensor 301. The axial direction of the cylindrical probe 302 is perpendicular to the axial direction of the drive screw. The inductive displacement sensor 301 is electrically connected to the measurement terminal 303.
As shown in fig. 1, the measurement terminal 303 includes a data processing unit 304 and a display unit 305. And the data processing unit 304 is configured to convert the measurement signal acquired by the inductance displacement sensor 301 into a straightness measurement result. A display unit 305 for displaying the linearity measurement result.
As shown in fig. 1, the supporting assembly includes a column 201 and a clamping member for clamping the inductive displacement sensor 301, and the clamping member is sleeved with the column 201 and fixed by a locking screw 205. The height of inductive displacement sensor 301 in the vertical direction can be adjusted in a flexible way by the clamping piece.
As shown in fig. 1, the clamping member includes a collet 202 and a side head clamp 204 connected to the column 201 and the inductive displacement sensor 301, respectively, the collet 202 and the side head clamp 204 are rotatably connected by a stud 203, and the side head clamp 204 and the inductive displacement sensor 301 are fixed by a locking screw 205. The collet 202 and the side clamp 204 constitute a clamping member, so that the side clamp 204 can be rotated in the circumferential direction of the stud 203 to adjust the position of the cylindrical surface measuring head 302, and the measuring device is applicable to measurement of a multi-curved cylindrical surface.
As shown in fig. 2, the positioning seat 103 is provided with a placing groove 105 on the surface thereof along the axial direction of the driving screw. It should be noted that the lower surface of the positioning seat 103 is a plane, and when the bottom surface of the cylindrical workpiece 104 to be detected is a plane, the cylindrical workpiece 104 can be horizontally placed after the positioning seat 103 is turned over.
As shown in fig. 2, in the present embodiment, the placement groove 105 is a V-shaped groove. The V-shaped groove can limit rotation when high-precision cylinder calibration and monitoring of the cylindrical surface workpiece 104 are placed, the stability of the whole operation is high, and the measurement error is effectively reduced.
As shown in fig. 1, in the present embodiment, the flatness of the bottom surface of the positioning seat 103 is less than 1 μm, the upper surface is a high-precision V-shaped structure, i.e. a high-precision cylinder with a cylindricity of less than 1 μm is placed in the V-shaped groove, and the parallelism of the generatrix of the high-precision cylinder to the reference surface of the bottom surface of the positioning seat 103 is less than 1 μm.
As shown in fig. 1, the specific measurement method of the above measurement apparatus is realized by the following steps.
S101: placing the high-precision cylinder in a V-shaped groove of the positioning seat 103, and moving the direction of the positioning seat 103 to enable the axis of the high-precision cylinder and the axis of the driving screw to be distributed at a small angle; after a driving screw of the air floatation guide rail 101 is started, a high-precision cylinder is driven to move, and the reading of a cylindrical surface measuring head 302 is observed; when the difference of the readings measured by the cylindrical measuring head 302 at the two ends of the high-precision cylinder is larger than the preset difference, slightly rotating the measuring head clamp to adjust the angle between the cylindrical measuring head 302 and the reference plane on the air-floating slide block 102; and repeatedly measuring the high-precision cylinder until the reading difference of the two ends of the high-precision cylinder is smaller than the preset difference value, and properly adjusting the position of the cylindrical measuring head 302. In this embodiment, the predetermined difference is 1 μm.
S102: when the cylindrical surface workpiece 104 is measured, the cylindrical surface workpiece 104 is placed in the V-shaped groove of the positioning seat 103, and the inductive displacement sensor 301 measures the bus data of the cylindrical surface in the cylindrical surface workpiece 104 in the process that the drive lead screw of the air floatation guide rail 101 drives the cylindrical surface workpiece 104 to move.
S103: and converting the bus data measured by the inductive displacement sensor 301 into a straightness result and displaying the straightness result.
It should be noted that the cylindrical workpiece 104 that can be measured by the present invention may be any one of a cylindrical surface, a hyperbolic cylindrical surface, and a hyperbolic cylindrical surface.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (6)

1. A high-precision measuring device for the straightness of a cylindrical bus is characterized by comprising an air floatation guide rail (101), an air floatation sliding block (102), a supporting assembly, an inductive displacement sensor (301) and a measuring terminal (303);
the air-floating slide block (102) is movably connected with the air-floating guide rail (101), the air-floating slide block (102) is sleeved with a driving lead screw arranged in the air-floating guide rail (101), and the top of the air-floating slide block (102) is provided with a positioning seat (103);
the supporting assembly is fixedly connected with the air floatation guide rail (101), the inductive displacement sensor (301) is connected with the supporting assembly, and a cylindrical measuring head (302) positioned above the positioning seat (103) is arranged at the end part of the inductive displacement sensor (301);
the axial direction of the cylindrical surface measuring head (302) is vertical to the axial direction of the driving screw rod;
the inductive displacement sensor (301) is electrically connected with the measuring terminal (303).
2. The cylindrical bus bar straightness high precision measuring device according to claim 1, wherein the measuring terminal (303) comprises a data processing unit (304) and a display unit (305);
the data processing unit (304) is used for converting the measurement signals collected by the inductance displacement sensor (301) into straightness measurement results;
a display unit (305) for displaying the linearity measurement result.
3. The cylindrical bus bar linearity high-precision measuring device of claim 1, wherein the supporting component comprises a vertical column (201) and a clamping piece for clamping the inductive displacement sensor (301), and the clamping piece is sleeved with the vertical column (201) and fixed through a locking screw (205).
4. The cylindrical bus bar linearity high-precision measuring device according to claim 3, wherein the clamping piece comprises a jacket (202) and a side head clamp (204) which are respectively connected with the upright column (201) and the inductive displacement sensor (301), the jacket (202) and the side head clamp (204) are rotatably connected through a stud (203), and the side head clamp (204) and the inductive displacement sensor (301) are fixed through a locking screw (205).
5. The cylindrical generatrix linearity high-precision measuring device as claimed in claim 1, wherein the positioning seat (103) is provided with a placing groove (105) on the surface along the axial direction of the driving screw.
6. The cylindrical generatrix straightness accuracy and high precision measuring device as claimed in claim 5, wherein the placing groove (105) is a V-shaped groove.
CN202120514943.1U 2021-03-11 2021-03-11 High-precision measuring device for straightness of cylindrical bus Active CN214173239U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120514943.1U CN214173239U (en) 2021-03-11 2021-03-11 High-precision measuring device for straightness of cylindrical bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120514943.1U CN214173239U (en) 2021-03-11 2021-03-11 High-precision measuring device for straightness of cylindrical bus

Publications (1)

Publication Number Publication Date
CN214173239U true CN214173239U (en) 2021-09-10

Family

ID=77595993

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120514943.1U Active CN214173239U (en) 2021-03-11 2021-03-11 High-precision measuring device for straightness of cylindrical bus

Country Status (1)

Country Link
CN (1) CN214173239U (en)

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