CN206847852U - Multiple degrees of freedom object mass center measurement apparatus - Google Patents
Multiple degrees of freedom object mass center measurement apparatus Download PDFInfo
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- CN206847852U CN206847852U CN201621348249.2U CN201621348249U CN206847852U CN 206847852 U CN206847852 U CN 206847852U CN 201621348249 U CN201621348249 U CN 201621348249U CN 206847852 U CN206847852 U CN 206847852U
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Abstract
It the utility model is related to a kind of object mass center survey tool, specifically multiple degrees of freedom object mass center measurement apparatus.Horizontally disposed T-shaped chassis, fixed mechanism I and fixed mechanism II；Fixed mechanism I has adjustable bridge structure and the fixed part for fixing product to be detected；The fixed mechanism II has adjustable bridge structure and the fixed part for fixing product to be detected；Also include the location structure for being separately positioned on three end bases of T-shaped chassis, the location structure includes ball-and-socket and steel ball；The fixed mechanism I and fixed mechanism II have rotating mechanism respectively, and the fixed part of fixed mechanism I and the fixed part of fixed mechanism II are flexibly connected by rotating mechanism with adjustable bridge structure and adjustable bridge structure respectively；Technical scheme provided by the utility model, it is possible to increase the speed of multiple degrees of freedom object mass center measurement, so as to improve the efficiency of the process of scientific research such as research and development, experiment on the whole.
Description
Technical field
It the utility model is related to a kind of object mass center survey tool, specifically multiple degrees of freedom object mass center measurement apparatus.
Background technology
With the further development of product development technology, diversification, batch productionization, become more meticulous turns into the development of nowadays product
Direction.Because product size and quality increase, movement velocity is speeded, and it is influenceed in motion process by factors such as mass eccentricities
Also it is increasing, so the required precision to product barycenter parameter also accordingly improves.
So-called product can be the object for having regular geometric shapes, abbreviation regular object or with irregular
The article of shape, referred to as multiple degrees of freedom object., can be by simply measuring and being calculated product for regular object
Centroid position；And for multiple degrees of freedom object, it is necessary to by complexity calculating and rational metering system, after repeatedly being calculated
Obtain.
Increasing in the volume of product, under conditions of quality is increasing, existing survey tool can not be fast
The measurement of speed and the barycenter for calculating product.The especially inside of multiple degrees of freedom object, diverse location have different parts,
This will further aggravate the burden for measuring barycenter work.
Due to the centroid measurement for multiple degrees of freedom object, occupy process of scientific research early stage such as research and development, experiment it is a large amount of when
Between, therefore, in the R＆D process of totality, in order to accurately be measured and be calculated, the substantial amounts of artificial and time is occupied, is made
Into the increase of R＆D cycle, efficiency of research and development reduces；Meanwhile for the centroid measurement of multiple degrees of freedom object, also by certain
Personnel ability is limited, it is necessary to there is the personnel of higher technical merit and working experience to complete measurement and evaluation work.
Therefore, in order to improve the speed of centroid measurement, raising efficiency is possessing, it is necessary to propose a kind of new survey tool
Under conditions of the technical merit and working experience of common staff, it becomes possible to complete measurement barycenter work.
Utility model content
The utility model is directed to problems of the prior art, it is proposed that a kind of measurement apparatus.Multiple degrees of freedom object matter
Heart measurement apparatus.Solve irregular shape, the problems such as object mass center of large volume is not easy to measure, time of measuring is long, realize one
Secondary property is loaded, you can completes the centroid measurement of three axial directions.
The technical solution of the utility model is as follows：
Multiple degrees of freedom object mass center measurement apparatus, including horizontally disposed T-shaped chassis, fixed mechanism I and fixed mechanism II；
The head of the T-shaped chassis is set along Y direction, the afterbody of T-shaped chassis perpendicular to head central point, along
The positive extension of X-direction；
The fixed mechanism I extends, fixed machine perpendicular to the X-axis and Y-axis cross part of T-shaped chassis along Z-direction is positive
Structure II extends perpendicular to the positive end of the X-axis of T-shaped chassis along Z-direction is positive；
The fixed mechanism I has adjustable bridge structure and the fixed part for fixing product to be detected；The fixed machine
Structure II has adjustable bridge structure and the fixed part for fixing product to be detected；
Also include the location structure for being separately positioned on three end bases of T-shaped chassis, the location structure includes ball-and-socket
And steel ball；Ball-and-socket is divided into the first half and lower half, and steel ball, two summits point of the Z-direction of steel ball can be accommodated between ball-and-socket
Do not contacted with the first half of ball-and-socket and lower half；
The fixed mechanism I and fixed mechanism II have rotating mechanism, the fixed part and fixed mechanism of fixed mechanism I respectively
II fixed part is flexibly connected by rotating mechanism with adjustable bridge structure and adjustable bridge structure respectively；
The fixed part of the fixed mechanism I is able to the axial line rotation along X-axis with the fixed part of fixed mechanism II.
The utility model obtain beneficial effect be：
1, technical scheme provided by the utility model, it is possible to increase the speed of multiple degrees of freedom object mass center measurement, so as to
The efficiency of the process of scientific research such as research and development, experiment is improved on the whole.
2, technical scheme provided by the utility model is simple in construction, using easy, not by the horizontal shadow of individual skill
Ring.
3, technical scheme provided by the utility model, there is good processability of product structure, in order to the manufacture of fixture, dress
Match somebody with somebody, examine and repair.
4, technical scheme provided by the utility model, each fixed claw contacted with product is protected using rubber blanket
Shield, while the measurement of multiple degrees of freedom object mass center is met, it can avoid or reduce object and produce displacement with each fixed claw, carry
High product measurement accuracy.
Brief description of the drawings
Fig. 1 is the top view of structural representation of the present utility model.
Fig. 2 is the front view of structural representation of the present utility model.
Fig. 3 is the left view of structural representation of the present utility model.
Fig. 4 is the left view of the structural representation of the utility model measurement multiple degrees of freedom object.
Fig. 5 is the front view of the structural representation of the utility model measurement multiple degrees of freedom object.
Fig. 6 is the top view of the structural representation of the utility model measurement multiple degrees of freedom object.
Wherein, 1, T-shaped chassis, 2, fixed mechanism I, 3, fixed mechanism II, 4, location structure, 5, horizontal mobile mechanism, 6,
Angle positioning pointer, 21, the adjustable bridge structure of fixed mechanism I, 22, the fixed part of fixed mechanism I, 31, fixed mechanism II
Adjustable bridge structure, 32, the fixed part of fixed mechanism II.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
For the ease of the understanding of those skilled in the art, the vocabulary of some directionality in embodiment is three-dimensional seat respectively
What target direction determined.Wherein, X-axis, Y-axis are in same level, and X-axis horizontal direction is pointed to right side and set, and Y-axis is planar
Perpendicular to X-axis, the crosspoint of X-axis and Y-axis of the Z axis on horizontal plane.Described forward direction is that X-axis points to right-hand member, Y-axis respectively
Point to front end and Z axis points to upper end；Described head, afterbody are the left end of X-axis, right-hand member position respectively；It is described upper and lower to be respectively
Upper end, the lower end of Z axis.
Embodiment 1
As shown in FIG. 1 to 3：
Multiple degrees of freedom object mass center measurement apparatus, including horizontally disposed T-shaped chassis, fixed mechanism I and fixed mechanism II；
The head of the T-shaped chassis is set along Y direction, the afterbody of T-shaped chassis perpendicular to head central point, along X-direction
Forward direction extension；The fixed mechanism I extends along Z-direction is positive, fixed perpendicular to the X-axis and Y-axis cross part of T-shaped chassis
Mechanism II extends perpendicular to the positive end of the X-axis of T-shaped chassis along Z-direction is positive；
The fixed mechanism I has adjustable bridge structure and the fixed part for fixing product to be detected；The fixed machine
Structure II has adjustable bridge structure and the fixed part for fixing product to be detected；
Also include the location structure for being separately positioned on three end bases of T-shaped chassis, the location structure includes ball-and-socket
And steel ball, ball-and-socket are divided into the first half and lower half, steel ball, two summits point of the Z-direction of steel ball can be accommodated between ball-and-socket
Do not contacted with the first half of ball-and-socket and lower half；The fixed part of the fixed mechanism I passes through rotating mechanism with adjustable bridge structure
It is flexibly connected；The fixed part of the fixed mechanism II is flexibly connected with adjustable bridge structure by rotating mechanism；The fixed machine
The fixed part of structure I is able to the axial line rotation along X-axis with the fixed part of fixed mechanism II.
T-shaped chassis is horizontally disposed with, and the head of T-shaped chassis is the part with two ends, is set along Y direction, T-shaped
The afterbody of chassis is the part for only having an end, is set along X-direction, the central point and afterbody on the head of T-shaped chassis
It is fixedly connected by way of welding.
Fixed mechanism I and fixed mechanism II are set respectively along the forward direction of Z-direction, the side that fixed mechanism I passes through welding
Formula is fixed on the central point on the head of T-shaped chassis, and fixed mechanism II is fixed on the end of the afterbody of T-shaped chassis by way of welding
Portion position.
Fixed mechanism I and fixed mechanism II have fixed part respectively, and two fixed parts can fix object to be measured, and
And two fixed parts are able to be rotated by rotating mechanism；The axial line of the X-direction of two fixed parts can be distinguished
By two adjustable bridge structure regulation height, until conllinear in two axial line X-directions.Object to be measured is fixed on
On fixed part, for object to be measured using the axial line of the X-direction of two fixed parts as axle, manual toggle fixed part can 360
Degree rotation.
Fixed part and rotating mechanism can be various ways of the prior art, for example, fixed part can be three-point mount
Mode, 4 fixed forms, ring-type encirclement mode etc., rotating mechanism can be roller (bearing) mode, gear ring mode etc..
The present embodiment proposes a kind of mode of preferable fixed part and rotating mechanism, the fixed part of the fixed mechanism I and
The fixed part of fixed mechanism II is annular fixing frame respectively, and the inner circular part of annular fixing frame sets multiple fixed claws；The fixation
The rotating mechanism of mechanism I and the rotating mechanism of fixed mechanism II are roller structure respectively, and the roller is separately positioned on fixed machine
At the top of the adjustable bridge structure of structure I and fixed mechanism II, the cylindrical portion of annular fixing frame passes through axle center of the roller along X-direction
Line rotates.Further, in order to which faster object to be measured is fixed in multiple degrees of freedom object mass center measurement apparatus, annular
Fixed mount has two fixed claws respectively preferably by bolted upper and lower two semicircular rings, each semicircular ring.Further
, in order to prevent object to be measured in rotary course between fixed claw because the change of center of gravity produces displacement, it is necessary to strengthen
The contact site of frictional force, fixed claw and product to be measured sets up dismountable setting rubber blanket.
Adjustable bridge structure can be mode of the prior art, such as leading screw is with adjusting wheel construction, hydraulic structure, gear
Structure etc., the present embodiment propose a kind of preferable adjustable bridge structure：The adjustable bridge structure and fixed mechanism II of fixed mechanism I
Adjustable bridge structure respectively include height leading screw, fixed mechanism I can be adjusted fixed part and fixed mechanism II fixed part
Height adjustment handwheel, one end of height leading screw is vertically fixed on T-shaped chassis.Handwheel is highly adjusted by adjusting, in realization
Rise, down maneuver.The simple structure of this adjustable bridge structure, manufacturing cost is low, is adapted to common work librarian use.
Three ends of T-shaped chassis are respectively arranged below location structure, and location structure is made up of ball-and-socket and steel ball；Ball-and-socket point
For upper and lower two parts, with being fixedly connected below the end of T-shaped chassis, the lower half activity of ball-and-socket is set the ball-and-socket first half；Ball
The inside of nest can accommodate steel ball, have and only steel ball two summits in the Z-axis direction and the first half and the lower half of ball-and-socket
Contact.Steel ball is except that can support the overall weight of multiple degrees of freedom object mass center measurement apparatus and the weight of object to be measured
Outside, the distance between centre of sphere of any two steel ball will be as the data of measurement.
The barycenter of technical scheme measurement object of the present embodiment is actually used, it is necessary in the following way：
1, if three ends of T-shaped chassis are respectively A ends, B ends, C-terminal, A ends be provided in T-shaped chassis along X-axis side
To end, B ends, C-terminal are separately positioned on two ends along Y direction of T-shaped chassis；Three identical platform balances are chosen to press
It is horizontally disposed on the ground according to the position of A ends, B ends, C-terminal, the lower half of three ball-and-sockets is separately positioned on to the water of three platform balances
At planar central；
Three steel balls are respectively put into the lower half dented space of three ball-and-sockets, adjust the position (water of platform balance of platform balance
Planar central) corresponding A end, B ends, the first half of ball-and-socket below C-terminal respectively, multiple degrees of freedom object mass center measurement apparatus is overall
Be placed on three steel balls, ensure two summits along Z-direction of steel ball respectively with the first half of ball-and-socket and lower half from
By contacting；
Because the connection between three ends of T-shaped chassis can form isosceles triangle, the centre of sphere and the B ends of A ends steel ball
The distance of the centre of sphere of steel ball is identical with the distance of the centre of sphere of C-terminal steel ball with the centre of sphere of A ends steel ball, is set to L1；The centre of sphere of B ends steel ball
L2 is set to the distance of the centre of sphere of C-terminal steel ball；Measure and record L1 and L2 numerical value；
Two adjustable bridge structures are adjusted respectively, it is conllinear along the axial line of X-direction until two fixed parts；
2, keep multiple degrees of freedom object mass center measurement apparatus and platform balance position motionless, object to be measured is solid by two
Determine portion to be fixed in multiple degrees of freedom object mass center measurement apparatus；
3, if A ends, B ends, the reading (weight) of platform balance below C-terminal are respectively that M1, M2, M3 are read and remembered by platform balance
Record M1, M2, M3 numerical value；After record, by the zeros data of three platform balances.
Centroid position in X-direction is calculated according to formula 1：
Formula 1：
M=M1+M2+M3；
MLx=M3L1；
Wherein, Lx is the position at the fixed part center of centroid distance fixed mechanism I in X-direction.
Centroid position in Y direction is calculated according to formula 2：
Formula 2：
M=M1+M2+M3；
[M1 (L2)/2]-[M2 (L2)/2]=MLy；
Wherein, Ly is the position of the axial line along X-direction of two fixed parts of centroid distance in Y direction.
Object to be measured is rotated by 90 ° by the axial line of X-direction of the rotating mechanism along two fixed parts, this
When, the Y-axis and Z axis of former object to be measured are rotated by 90 ° respectively, and Z axis is on the horizontal plane common with X-axis；Re-read simultaneously
And M1, M2, M3 of three platform balances of record numerical value；
Centroid position in Y direction is calculated according to formula 3：
Formula 3：
M=M1+M2+M3；
[M1 (L2)/2]-[M2 (L2)/2]=MLz；
Wherein, Lz is the position of the axial line along X-direction of two fixed parts of centroid distance in Z-direction.
Pass through tri- numerical value of Lx, Ly, Lz, you can obtain the centroid position of object to be measured.
Further, it can accurately position when rotating object to be measured for the ease of common staff, set up two
Individual angle positioning pointer, described two angle positioning pointers are respectively fixedly disposed at the rotation of fixed mechanism I and fixed mechanism II
The sidepiece of mechanism.Preferably, angle positioning pointer is arranged on the Z axis of sidepiece of rotating mechanism, the finger of angle positioning pointer
Show that the axial line of fixed part is pointed in direction along Z axis.On the sidepiece of fixed part, cross line is made, cross line
Single line is directed at one of angle positioning pointer, and during rotation, angle positioning pointer becomes from the single line for pointing to cross line
Into the another single line for pointing to cross line, 90 degree of rotations of object to be measured are completed.
Embodiment 2：
As shown in Fig. 1~Fig. 6：
On the basis of previous embodiment 1, in order to further adapt to the object to be measured of different length can be fixed on it is more
Free degree object mass center measurement apparatus, the present embodiment propose a kind of preferable scheme.
Set up horizontal mobile mechanism, the positive fixed setting of X-axis of the horizontal mobile mechanism along T-shaped chassis, fixed machine
Structure II is movably arranged on T-shaped chassis by horizontal mobile mechanism.
Fixed mechanism II is enabled to move in the horizontal direction by the horizontal mobile mechanism set up, so as to solve not
The problem of being fixed on multiple degrees of freedom object mass center measurement apparatus with the object to be measured of length.
Horizontal mobile mechanism can use mode of the prior art, such as leading screw and regulation wheel construction, reel and steel wire
Rope structure, hydraulic structure, gear structure etc..The present embodiment proposes a kind of preferable horizontal mobile mechanism：Including two bearing blocks,
Length leading screw, the length adjustment handwheel that can adjust the position in the horizontal direction of fixed mechanism II, the both ends of length leading screw lead to respectively
Bearing block is crossed to be horizontally fixed on T-shaped chassis.
The structure of this horizontal mobile mechanism is simple, and manufacturing cost is low, is adapted to common work librarian use.
The barycenter of the technical scheme measurement object of the present embodiment is actually used, its occupation mode is similar to previous embodiment 1.
I.e.：Needing to adjust horizontal mobile mechanism so that the distance between two fixed parts can adapt to the maximum length of object to be measured,
Remaining occupation mode is identical with the occupation mode in embodiment 1.
The utility model is described in detail above in association with accompanying drawing embodiment, those skilled in the art can root
Many variations example is made to the utility model according to described above.Thus, some details in embodiment should not be formed to this practicality
New restriction, the utility model will be used as the scope of protection of the utility model using the scope that appended claims define.
Claims (8)
1. multiple degrees of freedom object mass center measurement apparatus, including horizontally disposed T-shaped chassis（1）, fixed mechanism I（2）With fixed machine
Structure II（3）；
The T-shaped chassis（1）Head set along Y direction, T-shaped chassis（1）Afterbody perpendicular to the central point on head, edge
The positive extension of X-direction；
The fixed mechanism I（2）Perpendicular to T-shaped chassis（1）X-axis and Y-axis cross part, extend along Z-direction is positive, it is fixed
Mechanism II（3）Perpendicular to T-shaped chassis（1）X-axis positive end, extend along Z-direction is positive；
The fixed mechanism I（2）With adjustable bridge structure I（21）With the fixed part I for fixing product to be detected（22）；Institute
State fixed mechanism II（3）With adjustable bridge structure II（31）With the fixed part II for fixing product to be detected（32）；
It is characterized in that：
Also include being separately positioned on T-shaped chassis（1）Three end bases location structure（4）, the location structure（4）Including
Ball-and-socket（41）And steel ball（42）；Ball-and-socket is divided into the first half and lower half, and steel ball, the Z-direction of steel ball can be accommodated between ball-and-socket
Two summits contacted respectively with the first half of ball-and-socket and lower half；
The fixed mechanism I（2）With fixed mechanism II（3）There is rotating mechanism, fixed mechanism I respectively（2）Fixed part I（22）
With fixed mechanism II（3）Fixed part II（32）Pass through rotating mechanism and adjustable bridge structure I respectively（21）With height adjustment knot
Structure II（31）It is flexibly connected；
The fixed mechanism I（2）Fixed part I（22）With fixed mechanism II（3）Fixed part II（32）It is able to along X-axis
Axial line rotation.
2. multiple degrees of freedom object mass center measurement apparatus according to claim 1, it is characterised in that：
Also include horizontal mobile mechanism（5）, the horizontal mobile mechanism（5）Along T-shaped chassis（1）The positive fixed setting of X-axis,
Fixed mechanism II（3）Pass through horizontal mobile mechanism（5）It is movably arranged on T-shaped chassis（1）On.
3. multiple degrees of freedom object mass center measurement apparatus according to claim 1, it is characterised in that：
The fixed part I（22）With fixed part II（32）It is annular fixing frame respectively, the inner circular part setting of annular fixing frame is multiple
Fixed claw；The rotating mechanism is roller, and the roller is separately positioned on fixed mechanism I（2）With fixed mechanism II（3）Height
Structural top is adjusted, the cylindrical portion of annular fixing frame is rotated by axial line of the roller along X-direction.
4. multiple degrees of freedom object mass center measurement apparatus according to claim 3, it is characterised in that：
Annular fixing frame includes upper and lower two semicircular rings being bolted, and each semicircular ring has two fixed claws respectively.
5. the multiple degrees of freedom object mass center measurement apparatus according to claim 3 or 4, it is characterised in that：
The contact site of the fixed claw and object to be measured removably sets rubber blanket.
6. multiple degrees of freedom object mass center measurement apparatus according to claim 1, it is characterised in that：
Adjustable bridge structure I（21）With adjustable bridge structure II（31）Include height leading screw respectively, fixed part I can be adjusted（22）
With fixed part II（32）Height adjustment handwheel, one end of height leading screw is vertically fixed on T-shaped chassis（1）On.
7. multiple degrees of freedom object mass center measurement apparatus according to claim 2, it is characterised in that：
Horizontal mobile mechanism（5）Including two bearing blocks, length leading screw, fixed mechanism II can be adjusted（3）Position in the horizontal direction
The length adjustment handwheel put, the both ends of length leading screw are horizontally fixed on T-shaped chassis by bearing block respectively（1）On.
8. multiple degrees of freedom object mass center measurement apparatus according to claim 3, it is characterised in that：
Also include two angle positioning pointers（6）, described two angle positioning pointers are respectively fixedly disposed at fixed mechanism I（2）
With fixed mechanism II（3）Rotating mechanism sidepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348249.2U CN206847852U (en) | 2016-12-09 | 2016-12-09 | Multiple degrees of freedom object mass center measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348249.2U CN206847852U (en) | 2016-12-09 | 2016-12-09 | Multiple degrees of freedom object mass center measurement apparatus |
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| Publication Number | Publication Date |
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| CN206847852U true CN206847852U (en) | 2018-01-05 |
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ID=60789742
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621348249.2U Active CN206847852U (en) | 2016-12-09 | 2016-12-09 | Multiple degrees of freedom object mass center measurement apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443216A (en) * | 2018-12-27 | 2019-03-08 | 上海机动车检测认证技术研究中心有限公司 | A kind of sweep test part positioning device |
| CN113701946A (en) * | 2021-08-05 | 2021-11-26 | 中冶建筑研究总院有限公司 | Gravity center measuring method for pottery figurines |
-
2016
- 2016-12-09 CN CN201621348249.2U patent/CN206847852U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443216A (en) * | 2018-12-27 | 2019-03-08 | 上海机动车检测认证技术研究中心有限公司 | A kind of sweep test part positioning device |
| CN109443216B (en) * | 2018-12-27 | 2023-11-28 | 上海机动车检测认证技术研究中心有限公司 | Part positioning device for scanning test |
| CN113701946A (en) * | 2021-08-05 | 2021-11-26 | 中冶建筑研究总院有限公司 | Gravity center measuring method for pottery figurines |
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