CN108225232A - A kind of bat with temperature self-compensation ability - Google Patents
A kind of bat with temperature self-compensation ability Download PDFInfo
- Publication number
- CN108225232A CN108225232A CN201810026922.8A CN201810026922A CN108225232A CN 108225232 A CN108225232 A CN 108225232A CN 201810026922 A CN201810026922 A CN 201810026922A CN 108225232 A CN108225232 A CN 108225232A
- Authority
- CN
- China
- Prior art keywords
- rod
- bat
- pipe
- end cap
- cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
Abstract
The invention discloses a kind of bats with temperature self-compensation ability, include the invar pipe of two standard balls of two standard balls and connection, and invar pipe both ends are separately installed with end cap, and end cap is equipped with the cone nest of installation standard ball, and cone nest bottom is embedded with magnet piece；End cap lower surface is equipped with rod-like structure, and the aluminum alloy pipe sleeve of cup-shaped is set with outside rod-like structure, and short axle shoulder is equipped on the outside of the rod-like structure of end cap lower surface, and compo pipe set bottom of a cup is fixedly connected with rod-like structure, and short axle shoulder is threadedly coupled with compo pipe jacketed cap mouth.The effective compensation of the present invention thermal deformation errors of bat itself, improve the precision of bat, and compensation effect is better than most of bat.The measurement accuracy that industry spot is calibrated instrument is improved in actual use.Improve the labor aptitude of bat so that bat precision is not influenced by complicated factory temperature environment.The simple easy processing of bat structure, and without complicated subsequent compensation algorithm, it is highly practical.
Description
Technical field
The present invention relates to gauge check field more particularly to a kind of bats with temperature self-compensation ability.
Background technology
The one-dimensional standard that bat is made of the rod piece of the low temperature coefficient of expansion and two high-precision spheres provides
The centre of sphere of the gauged distance between two balls is away from bat has many advantages, such as that simple in structure, portable, calibration accuracy is high.In the world, ball
Stick and bat deformation class standard device are widely used in articulated arm coordinate measuring machine, laser tracker, laser scanner and photograph
The calibration of the precision instruments such as phase formula space measurement instrument is to calibrate the articulated arm coordinate measuring machine linear measure longimetry error of indication most
Good one-dimensional standard.In ASME 89.4.22-2004, VDI/VDE 2,167 2009 and ISO 13060-12 2016 all comprising pair
The definition of bat structure and function.
The member structure of current bat generally selects the materials such as low-expansion invar, carbon fiber to reduce material thermal change
Shape, but in addition to this, the thermal deformation of bat in itself is not included in research contents by most of research, does not consider standard thermal deformation pair
The influence for measuring and demarcating.The rod portion of 105423950 A of patent CN uses the carbon fiber pipe of low thermal coefficient of expansion to reduce
Rod piece thermal deformation caused by temperature.102538727 B of patent CN are by using ceramic material, the low thermal expansion of implementation tool.Specially
The material using low thermal coefficient of expansion of the same race is proposed in sharp 2004/0036867 A1 of US（Such as glass ceramics）Make one-dimensional mark
Quasi- device, this approach avoid because material thermal expansion coefficient difference due to be difficult to heat error compensation the problem of.But Yi Shang patent is equal
Only reduce the thermal expansion of standard by changing material, remaining thermal deformation is transmitted or put step by step by measurement or calibration process
Greatly, measurement and stated accuracy can still be influenced.2017/0153102 A1 of patent US devise a kind of double ball-and-beam systems, using at least
One group of double bat is measured or is demarcated, while is used as using at least one set of double bats with reference to bat.Heat is obtained with reference to double bats
Expansion displacement deflection measures double bats and obtains measured parameter, by the Thermal Error of comparing calculation compensation bat.The patent is to ball
Stick Thermal Error is further compensate for, but the contrast test of progress equivalent is needed while measurement experiment so that workload
It is double.
Invention content
The purpose of the present invention is design a kind of bat with temperature self-compensation ability.
For achieving the above object, the technical scheme is that：A kind of bat with temperature self-compensation ability, packet
It includes two standard balls and connects the invar pipe of two standard balls, the invar pipe both ends are separately installed with end cap, the end cap
For thin flange plate-like, end cap upper surface middle part is equipped with the cone nest of installation standard ball, and the cone nest bottom is embedded with magnet piece, magnet
Block adsorbs standard ball in cone nest；Rod-like structure is equipped in the middle part of the end cap lower surface, rod-like structure stretches into the invar pipe
Interior, rod-like structure distal center is equipped with screw mounting hole；The aluminum alloy pipe sleeve of cup-shaped is set with outside the rod-like structure, it is described
Mounting screw in screw mounting hole, screw pass through compo pipe set bottom of a cup to be fixedly connected with alloy pipe sleeve with rod-like structure；The end
Short axle shoulder is equipped on the outside of the rod-like structure of lid lower surface, short axle shoulder inner surface is equipped with screw thread, the compo pipe jacketed cap mouth outer surface
Equipped with screw thread, the compo pipe set bottom of a cup is fixedly connected with rod-like structure, and the short axle shoulder is threadedly coupled with compo pipe jacketed cap mouth.
Deformation gap is equipped between the alloy pipe sleeve inner cup wall and rod-like structure.
The beneficial effects of the invention are as follows：
The effective compensation of the present invention thermal deformation errors of bat itself improve the precision of bat, and compensation effect is better than most of
Bat.The measurement accuracy that industry spot is calibrated instrument is improved in actual use.Improve the work accommodation of bat
Property so that bat precision is not influenced by complicated factory temperature environment.The simple easy processing of bat structure, and without after complicated
Continuous backoff algorithm, it is highly practical.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is end cover structure schematic diagram；
Fig. 3 compensates schematic diagram for high temperature deformation of the present invention；
Fig. 4 compensates schematic diagram for low-temperature deformation of the present invention；
Fig. 5 is temperature self-compensation result of the test of the present invention.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below in conjunction with attached drawing.
As shown in Figure 1, 2, a kind of bat with temperature self-compensation ability, including two standard balls 1 and connection two
The invar pipe 2 of standard ball 1,2 both ends of invar pipe are separately installed with end cap 3, and the end cap 3 is thin flange plate-like, on end cap 3
Surface middle part is equipped with the cone nest 4 of installation standard ball 1, and standard ball 1 is inhaled embedded with magnet piece 5, magnet piece 5 in 4 bottom of the cone nest
It is attached in cone nest 4；Rod-like structure 6 is equipped in the middle part of 3 lower surface of end cap, rod-like structure 6 is stretched into the invar pipe 2, rod-shaped
6 distal center of structure is equipped with screw mounting hole 7；The aluminum alloy pipe sleeve 8 of cup-shaped, the spiral shell are set with outside the rod-like structure 6
Mounting screw 9 in mounting hole 7 is followed closely, alloy pipe sleeve 8 is fixedly connected by screw 9 across 8 bottom of a cup of alloy pipe sleeve with rod-like structure 6；Institute
It states 3 lower surface rod-like structure of end cap, 6 outside and is equipped with short axle shoulder 10,10 inner surface of short axle shoulder is equipped with screw thread, 8 glasss of the alloy pipe sleeve
Mouth outer surface also is provided with screw thread, and 8 bottom of a cup of alloy pipe sleeve is fixedly connected with rod-like structure 6, the short axle shoulder 10 and compo pipe
Cover the threaded connection of 8 rims of a cup.
Deformation gap 11 is equipped between the 8 inside wall of cup of alloy pipe sleeve and rod-like structure 6.
As shown in Figure 3,4, bat of the invention realizes nearly zero thermal deformation by structure self compensation；When temperature is higher than standard temperature
When spending, invar pipe 2 is heated to be expanded to the extended line of bat axial line, at the same time, 8 expanded by heating of alloy sleeve, due to alloy
The expansion thermal deformation of 8 wall of cup of pipe sleeve is more than rod-like structure 6, and alloy pipe sleeve 8 pulls rod-like structure 6 to be transported to the axial line midpoint of bat
It is dynamic, it since the end face of end cap 6 is relatively thin, is recessed inwardly after stress, standard ball 1 generates opposite with 2 deformation direction of invar pipe therewith
Deformation counteracts the axial expansion deformation of invar pipe 2；When temperature is less than normal temperature, 2 contract on cooling of invar pipe, due to closing
The contraction distortion of golden 8 wall of cup of pipe sleeve is more than rod-like structure 6, and alloy pipe sleeve 8 pushes extension of the rod-like structure 6 to the axial line of bat
Line moves, and since the end face of end cap 6 is relatively thin, convex is fallen into after stress, and standard ball 1 generates and 2 deformation direction phase of invar pipe therewith
Anti- deformation counteracts the axial shrinkage deformation of invar pipe 2.
The coefficient of thermal expansion of aluminium alloy is far above invar, by largely calculating and the simulating, verifying under different temperatures, ball
The displacement summation of stick both ends standard ball 1 and the displacement magnitude approximately equal of invar pipe 2, direction is on the contrary, bat integrally shows closely
Zero thermal deformation, data show that relative deformation of the bat standard component between 0 DEG C -40 DEG C is less than 1.5 microns, has reached fine
Compensation effect.
It is by taking length is the bat of 500mm as an example, bat is horizontal positioned, it fixes either end and limitation radially wobbles, ball
The relative deformation of stick is represented by the difference of the deflection of standard ball 1, by finite element simulation, by environment temperature by 0 DEG C of rising
To 40 DEG C, a relative deformation is calculated every 2 DEG C, the results are shown in Figure 5：The curve expression of the larger no identification point of slope does not have
The relative deformation of bat when having temperature compensator, the curve of the smaller tape identification point of slope represent the opposite change of complete bat
Shape amount, deflection is maximum at 0 DEG C, is 1.17 μm, it is seen that the heat distortion amount very little of bat can be neglected, and temperature compensator is mended
Repay effect clearly.
Described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Claims (2)
1. a kind of bat with temperature self-compensation ability includes the invar pipe of two standard balls of two standard balls and connection,
It is characterized in that, the invar pipe both ends are separately installed with end cap, the end cap is thin flange plate-like, and end cap upper surface middle part is set
There is the cone nest of installation standard ball, the cone nest bottom adsorbs standard ball in cone nest embedded with magnet piece, magnet piece；The end
Rod-like structure is equipped in the middle part of lid lower surface, rod-like structure is stretched into the invar pipe, and rod-like structure distal center is pacified equipped with screw
Fill hole；It is set with the aluminum alloy pipe sleeve of cup-shaped outside the rod-like structure, mounting screw in the screw mounting hole, screw passes through
Alloy pipe sleeve is fixedly connected by compo pipe set bottom of a cup with rod-like structure；Short axle is equipped on the outside of the rod-like structure of the end cap lower surface
Shoulder, short axle shoulder inner surface are equipped with screw thread, and the compo pipe jacketed cap mouth outer surface also is provided with screw thread, the compo pipe set bottom of a cup and bar
Shape structure is fixedly connected, and the short axle shoulder is threadedly coupled with compo pipe jacketed cap mouth.
2. the bat according to claim 1 with temperature self-compensation ability, which is characterized in that inside the alloy pipe sleeve
Deformation gap is equipped between wall of cup and rod-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026922.8A CN108225232A (en) | 2018-01-11 | 2018-01-11 | A kind of bat with temperature self-compensation ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026922.8A CN108225232A (en) | 2018-01-11 | 2018-01-11 | A kind of bat with temperature self-compensation ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108225232A true CN108225232A (en) | 2018-06-29 |
Family
ID=62640263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026922.8A Pending CN108225232A (en) | 2018-01-11 | 2018-01-11 | A kind of bat with temperature self-compensation ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108225232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029323A (en) * | 2018-09-14 | 2018-12-18 | 佛山市天目工业测量科技有限公司 | A kind of accurate club with thermal distortion compensation mechanism |
| CN110174073A (en) * | 2019-06-20 | 2019-08-27 | 佛山市天目工业测量科技有限公司 | A kind of thermal deformation device and method based on spectrally resolved interferometry bat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107962A (en) * | 1985-11-07 | 1987-05-06 | 铁道部科学研究院铁道建筑研究所 | Temperature compensated scale and rail clip mark |
| US20040066508A1 (en) * | 2002-10-07 | 2004-04-08 | Ingobert Schmadel | Spatial reference system |
| CN1636130A (en) * | 2002-02-20 | 2005-07-06 | 梅特龙内姆工业测量有限公司 | Thermally compensated test piece for coordinate measuring machines |
-
2018
- 2018-01-11 CN CN201810026922.8A patent/CN108225232A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107962A (en) * | 1985-11-07 | 1987-05-06 | 铁道部科学研究院铁道建筑研究所 | Temperature compensated scale and rail clip mark |
| CN1636130A (en) * | 2002-02-20 | 2005-07-06 | 梅特龙内姆工业测量有限公司 | Thermally compensated test piece for coordinate measuring machines |
| US20040066508A1 (en) * | 2002-10-07 | 2004-04-08 | Ingobert Schmadel | Spatial reference system |
Non-Patent Citations (1)
| Title |
|---|
| 黄靖远 等: "《机械设计学》", 31 October 1991, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029323A (en) * | 2018-09-14 | 2018-12-18 | 佛山市天目工业测量科技有限公司 | A kind of accurate club with thermal distortion compensation mechanism |
| CN109029323B (en) * | 2018-09-14 | 2022-10-04 | 佛山市天目工业测量科技有限公司 | Precision ball rod with thermal deformation compensation mechanism |
| CN110174073A (en) * | 2019-06-20 | 2019-08-27 | 佛山市天目工业测量科技有限公司 | A kind of thermal deformation device and method based on spectrally resolved interferometry bat |
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Application publication date: 20180629 |