CN107234572A - Magnesium alloy LED light box method for assembling and positioning and device - Google Patents
Magnesium alloy LED light box method for assembling and positioning and device Download PDFInfo
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- CN107234572A CN107234572A CN201710529264.XA CN201710529264A CN107234572A CN 107234572 A CN107234572 A CN 107234572A CN 201710529264 A CN201710529264 A CN 201710529264A CN 107234572 A CN107234572 A CN 107234572A
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003032 molecular docking Methods 0.000 claims description 12
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 6
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 2
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- 238000006073 displacement reaction Methods 0.000 description 4
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- 244000141353 Prunus domestica Species 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000001085 Trapa natans Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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Abstract
The invention discloses a kind of magnesium alloy LED light box method for assembling and positioning and device, comprise the following steps：(1) positioning hole is set；(2) straight pin is set；(3) rhombus pin is set；(4) assembling straight pin and the first positioning hole；(5) assembling rhombus pin and the second positioning hole；(6) inspect for acceptance；A kind of magnesium alloy LED light box assembles positioner, including lamp box housing and lamp house body, the lamp house body is provided with the lamp box housing, alignment pin is provided with the lamp house body, the alignment pin includes straight pin and rhombus pin, the lamp box housing is connected by the alignment pin with the lamp house body, is provided with the lamp box housing and first positioning hole and second positioning hole corresponding with the straight pin and rhombus pin is provided with front apron, front apron.The present invention solves angular orientation problem, eliminates positioning, it is ensured that interchangeability.
Description
Technical field：
The present invention relates to a kind of localization method and device, more particularly to a kind of magnesium alloy LED light box method for assembling and positioning
And device.
Background technology：
Magnesium alloy LED light box series of products are always combined in outfield there are two cylinders on docking difficulty, casing when assembling
Pin can not be docked normally with two mounting holes on other casing, and this is due to that accumulated error is larger in casing manufacturing process, and
Product design uses bicylindrical finger setting, does not meet Course Exercise in Machinery Elements Design positioning principle, generated positioning, causes assembly to combine
Installation can not be matched, and take the method changed alignment pin or change casing, and due to no interchangeability, being dismounted for multiple times sub-assembly is carried out
Apolegamy, injure tank surface coat, and it is time-consuming delay work, waste of resource；In order to ensure the interchangeability of general assembly, it is ensured that smoothly
The combination installation of assembly outfield is realized, designer increases the size of mounting hole intentionally, it is ensured that straight pin design size is constant, this
Sample disclosure satisfy that interchangeability requirement, still, the problem of bringing new, and when holes accomplishes maximum limit of size, two alignment pins are done
During to the minimum limit of size, and pitch-row error, influence of the pin away from error so that fit clearance is excessive, casing is produced when docking
After raw angular displacement, box body combinations, it is impossible to ensure that lamp body is arranged on conplane require.
The content of the invention：
The technical problems to be solved by the invention are：The deficiencies in the prior art are overcome to eliminate positioning there is provided one kind
Magnesium alloy LED light box method for assembling and positioning and device..
The present invention is for the technical solution adopted for solving the technical problem：
A kind of magnesium alloy LED light box method for assembling and positioning, comprises the following steps：
(1) positioning hole is set：Two positioning holes are set on the front apron of lamp box housing, and two positioning holes are respectively first
Positioning hole and the second positioning hole；
(2) straight pin is set：On lamp house body with the first positioning hole corresponding position set straight pin, straight pin it is straight
Footpath is 9.95mm, and the diameter tolerance of straight pin is 0.05mm；
(3) rhombus pin is set：Rhombus pin, the rhombus pin are set with the second positioning hole corresponding position on lamp house body
Upper and lower ends on Y-Y directions are each provided with the arc section of one section and the circular pegs identical radian measure, it is ensured that can on Y-Y directions
It is accurately positioned, is set to diamond structure on the rhombus pin X-X directions, it is ensured that there are enough displacement spaces on X-X directions,
X-X does not play the role of positioning on direction.
(4) assembling straight pin and the first positioning hole：On front apron using the straight pin on lamp house body and lamp box housing
The first positioning hole carry out docking assembling, it is ensured that have minimum guarantee between straight pin and first positioning hole during cylinder finger setting
Gap 0.05mm.
(5) assembling rhombus pin and the second positioning hole：On front apron using the rhombus pin on lamp house body and lamp box housing
The second positioning hole carry out docking assembling, it is ensured that have minimum between second positioning hole on Y-Y directions during rhombus finger setting
Ensure gap 0.05mm.
(6) inspect for acceptance：Carry out an acceptance inspection inspection to the straight pin and rhombus pin assembled, and surrounding tank surface coat is not
There can be breakage, it is ensured that lamp house body and lamp box housing are each in its defined same plane.
In step (3), the size on the rhombus pin Y-Y directions is consistent with the diameter dimension of the straight pin, described
Size on rhombus pin X-X directions can directly be chosen according to the diameter dimension on Y-Y directions, as follows：
| The diameter d of pin | 4~6 | 6~10 | 10~18 | 18~30 | 30~50 | ＞ 50 |
| B (millimeter) | 2 | 3 | 5 | 8 | 12 | 14 |
| B (millimeter) | d-1 | d-2 | d-4 | d-8 | d-10 | d-12 |
Wherein, in b- rhombus pins circular arc portion air line distance,
Size on B- rhombus pin X-X directions.
In step (3), the rhombus pin is set to diamond shape with the second positioning hole junction, and remainder is set
It is set to cylindrical shape.
In step (1), the diameter of first positioning hole and the second positioning hole is 10mm, first positioning hole and
The diameter tolerance and pitch-row tolerance of second positioning hole are 0.05mm.
Between the distance between the straight pin and the rhombus pin and first positioning hole and the second positioning hole
Apart from corresponding.
A kind of magnesium alloy LED light box is assembled to be set on positioner, including lamp box housing and lamp house body, the lamp box housing
It is equipped with the lamp house body, the lamp house body and is provided with alignment pin, the alignment pin includes straight pin and rhombus pin, described
Lamp box housing is connected by the straight pin and rhombus pin with the lamp house body, and front is provided with the lamp box housing
First positioning hole and second positioning hole corresponding with straight pin and rhombus pin is provided with plate, front apron.
The rhombus pin is based on the connection center line of the first positioning hole and the second positioning hole, by center line both sides
Alignment pin the right and left respectively prunes a part, and retains the cylinder with one fixed width on the Y-Y directions between the right and left
Partial diamond positioning pin, the diameter tolerance of the rhombus pin is 0.05mm.
A diameter of 9.95mm of the straight pin, the diameter tolerance of straight pin is 0.05mm, the straight pin and rhombus pin
There are minimum guarantee gap 0.05mm, the straight pin when carrying out with first positioning hole and the second positioning hole and dock assembling
The excessive fit system of fine grade is used with rhombus pin and first positioning hole and the second positioning hole.
The diameter of first positioning hole and the second positioning hole is 10mm, first positioning hole and the second positioning hole
Diameter tolerance and pitch-row tolerance are 0.05mm.
The present invention positive beneficial effect be：
1st, a straight pin and a rhombus pin integrated positioning are used in the present invention, magnesium alloy lamp box is efficiently solved
Non-interchangeable problem is installed in combination, eliminate it is original produced using two cylinder finger settings cross and position, solve angle
To orientation problem, it is ensured that interchangeability, when outfield is assembled, arbitrarily it can dismantle or combine.
2nd, straight pin and rhombus pin and positioning hole use the excessive fit system of fine grade in the present invention, not only increase dress
With precision, it is ensured that assembling quality, and assembling speed is fast, and the operating efficiency compared to before improves 3~5 times.
3rd, rhombus finger setting is used in the present invention, is matched without being dismounted for multiple times sub-assembly, it is to avoid casing table is injured
Face coat, reduce trial assembly number of times, save human resources, it is to avoid the waste of man power and material.
4th, the present invention uses straight pin and rhombus pin integrated positioning in a plane, meets Course Exercise in Machinery Elements Design positioning former
Reason, ensure that lamp body is arranged on same plane, is installed for follow-up combination and provides strong combination foundation condition.
Brief description of the drawings：
Fig. 1 is the schematic flow sheet of magnesium alloy LED light box method for assembling and positioning of the present invention and device；
Fig. 2 is the structural representation of magnesium alloy LED light box method for assembling and positioning of the present invention and device；
Fig. 3 is Fig. 2 front view；
Fig. 4 is rhombus pin and the attachment structure schematic diagram of positioning hole in Fig. 2.
Embodiment：
The present invention is made further explanation and description with specific embodiment below in conjunction with the accompanying drawings：
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4：In figure, 1- lamp box housings, 2- lamp house bodies, 3- straight pins, 4- rhombus pins, 5-
Front apron, the positioning holes of 6- first, the positioning holes of 7- second.
Embodiment：A kind of magnesium alloy LED light box method for assembling and positioning, comprises the following steps：
(1) positioning hole is set：Two positioning holes are set on the front apron 5 of lamp box housing 1, and two positioning holes are respectively the
One positioning hole 6 and the second positioning hole 7.
(2) straight pin 3 is set：Straight pin 3 is set with the corresponding position of the first positioning hole 6 on lamp house body 2, straight pin 3
A diameter of 9.95mm, the diameter tolerance of straight pin 3 is 0.05mm.
(3) rhombus pin 4 is set：Rhombus pin 4, rhombus pin 4Y-Y are set with the corresponding position of the second positioning hole 7 on lamp house body 2
Upper and lower ends on direction are each provided with the arc section of one section and circular pegs identical radian measure, and rhombus pin 4X-X is set to water chestnut on direction
Shape structure.
(4) positioning hole 6 of straight pin 3 and first is assembled：Utilize the straight pin 3 and the front of lamp box housing 1 on lamp house body 2
The first positioning hole 6 on plate 5 carries out docking assembling, it is ensured that have most between the positioning hole 6 of straight pin 3 and first when straight pin 3 is positioned
Small guarantee gap 0.05mm.
(5) positioning hole 7 of rhombus pin 4 and second is assembled：Utilize the rhombus pin 4 and the front of lamp box housing 1 on lamp house body 2
The second positioning hole 7 on plate 5 carries out docking assembling, it is ensured that have when rhombus pin 4 is positioned on Y-Y directions between the second positioning hole 7
Minimum ensures gap 0.05mm.
(6) inspect for acceptance：Carry out an acceptance inspection inspection, surrounding tank surface coat to the straight pin 3 and rhombus pin 4 assembled
There can not be breakage, it is ensured that lamp house body 2 and lamp box housing 1 are each in its defined same plane.
In step (3), the size on rhombus pin 4Y-Y directions is consistent with the diameter dimension of straight pin 3, rhombus pin 4X-X
Size on direction can directly be chosen according to the diameter dimension on Y-Y directions.
In step (3), the junction of 4 and second positioning hole of rhombus pin 7 is set to diamond shape, and remainder is set to circle
Post shapes.
In step (1), the diameter of the first positioning hole 6 and the second positioning hole 7 is 10mm, the first positioning hole 6 and second
The diameter tolerance and pitch-row tolerance of positioning hole 7 are 0.05mm.
The distance between straight pin 3 and rhombus pin 4 and the first positioning hole 6 and the second positioning hole 7 the distance between relatively
Should.
A kind of magnesium alloy LED light box is assembled to be set on positioner, including lamp box housing 1 and lamp house body 2, lamp box housing 1
It is equipped with lamp house body 2, lamp house body 2 and is provided with alignment pin, alignment pin includes straight pin 3 and rhombus pin 4, lamp box housing 1 leads to
Cross straight pin 3 and rhombus pin 4 is connected with lamp house body 2, be provided with front apron 5, front apron 5 and be provided with lamp box housing 1
First positioning hole 6 and second positioning hole 7 corresponding with straight pin 3 and rhombus pin 4.
Rhombus pin 4 is based on the connection center line of the first positioning hole 6 and the second positioning hole 7, by center line both sides
Alignment pin the right and left respectively prunes a part, and retains the cylinder with one fixed width on the Y-Y directions between the right and left
Partial diamond positioning pin, the diameter tolerance of rhombus pin 4 is 0.05mm.
A diameter of 9.95mm of straight pin 3, the diameter tolerance of straight pin 3 is 0.05mm, straight pin 3 and rhombus pin 4 and the
One positioning hole 6 and the second positioning hole 7 carry out having minimum guarantee gap 0.05mm, straight pin 3 and rhombus pin 4 during docking assembling
The excessive fit system of fine grade is used with the first positioning hole 6 and the second positioning hole 7.
The diameter of first positioning hole 6 and the second positioning hole 7 is 10mm, the first positioning hole 6 and the second positioning hole 7 diameter
Tolerance and pitch-row tolerance are 0.05mm.
By taking 500mm × 500mm lamp box products as an example, its technology mechanism is：Part is with the first positioning hole 6 and the second positioning hole
7 as positioning datum, and keeper is set to two straight pins 3, now, and the diameter and tolerance of two straight pins 3 are ￠ 9.95-0.05,
The distance between two straight pins 3 size is 435 ± 0.05, and the diameter and tolerance of the first positioning hole 6 and the second positioning hole 7 are to be
￠ 10+0.05, the distance between the first positioning hole 6 and the second positioning hole 7 size is 435 ± 0.05, is determining the chi of keeper
During very little and tolerance, it is necessary to consider the requirement for loading and unloading easily and meeting positioning precision of part.
For the ease of analysis, first it is assumed that manufacturing accurate apart from size between the first positioning hole 6 and the second positioning hole 7
Really, foozle is not produced, i.e.,：It is also not produce foozle between 435, two straight pins 3 apart from size, apart from size
For 435, now, in order to ensure can be exchanged during all casings assemblings, freely load and unload, the maximum gauge of straight pin 3 is:
D (pin max)=D (hole min)-⊿ (gap)=10-0.05=9.95,
Minimum fit gap between ⊿ (gap) ﹣ holes and pin.
Again assume that and gap 0.05, two cylinders are not necessary to guaranty that between the positioning hole 6 of straight pin 3 and first and the second positioning hole 7
Apart from scale error it is zero between pin 3, because the first positioning hole 6 and the second positioning hole 7 are present apart from size tolerance+0.05, only
It can be compensated with the method for one of diameter of straight pin 3 is reduced, now, in order to ensure can be exchanged during all casing assemblings,
Freely load and unload, the maximum gauge of straight pin 3 is:
D (the left max of pin)=D (hole min)=￠ 10
D (the right max of pin)=D (hole min) -2 × 0.05.
If two straight pins 3 are ± 0.05 apart from dimensional tolerance, with above-mentioned situation similarly.
Actual conditions are either processed in size, or hole, pin manufacturing process, there is error, error is zero
Simply perfect condition, in product design, it is necessary to set in each dimensional tolerance, actual processing, it is ensured that drawing tolerance, purpose
It is to ensure matching requirements.
Defined in drawing the first positioning hole 6 and the second positioning hole 7 apart from dimensional tolerance be ± 0.05, two straight pins 3
Be ± 0.05 apart from dimensional tolerance, be also required for during handling it is minimum ensure gap 0.05, now in order to ensure that casing is installed
Shi Suoyou casings have interchangeability, can independent assortment, be convenient to mount and dismount, the maximum gauge of two straight pins 3 is：
D (the left max of pin)=D (hole min)-⊿ (gap)=10-0.05=9.95,
D (pin right max)=D (hole min)-⊿ (gap) -2 × pitch-row tolerance -2 × pin away from tolerance=10-0.05-2 ×
0.05-2 × 0.05=9.75.
Consider composite factor influence, casing has angular displacement, α angles maximum angular displacement when installing
Tg α=(δPosition 1y+δPosition 2y)/2L
=[(a1+⊿1+aFixed 1)+(a2+⊿2+aFixed 2+2L+2LIt is fixed)]/2L
L:Positioning hole pitch-row tolerance；LIt is fixed：Straight pin 3 is sold away from tolerance；
Each factor at above-mentioned influence inclination angle, casing positioning hole pitch-row error, straight pin 3 are sold influences maximum away from error.
In order to improve positioning precision, it is ensured that interchangeability, then it is accurate fixed to be realized using a straight pin 3 and a rhombus pin 4
Position.
When being positioned it can be seen from being analyzed above using two straight pins 3, angular position error is very big, because adopting
Positioned with two straight pins 3, resetting (cross and position) has occurred in X-X directions, X-X side has been limited in the first alignment pin
In the case of movement, limited again using the second alignment pin deduplication, in order to compensate L and LIt is fixedTwo range errors, it is necessary to significantly
Reduce the diameter of second straight pin 3, so that gap increases between the first positioning hole 6 and the second positioning hole 7 and straight pin 3
Greatly, error is added.
But second straight pin 3 is being pruned into a part along holes center line connecting direction, it is possible to ensure it is easy to loading and unloading simultaneously
This alignment pin is set not played the role of positioning in X-X directions, in Y-Y directions alignment pin and need not be because compensating apart from tolerance 2L and 2LIt is fixed
And diameter is reduced, so, the gap between the second positioning hole 7 and straight pin 3 just can be greatly reduced, thus reduce angular positioning
Error, in order to be kept for the certain intensity of the second alignment pin and life-span, can be cut to rhombus and retain the column part that width is b.
It is with a size when straight pin 3 and a positioning of rhombus pin 4：
DFixed 1=(D1-⊿1)-aFixed 1
Shi Zhong ⊿1And aFixed 1Situation during with being positioned with a hole is identical.
aFixed 2It is the minimum diameter for limiting rhombus pin 4, Zhi You ⊿ 2 play two effects, on the one hand it is risen between guarantee
Gap is acted on, while ensureing that benchmark has larger deflection yoke on center line connecting direction again, to compensate apart from tolerance 2L and 2LIt is fixed。
In order to ensure that benchmark has larger deflection yoke on center line connecting direction, and need not be by gap ⊿ 2 numerical value
Increase is a lot, and this numerical value is relevant with the width apart from tolerance and column part, if the width of column part is b, connects the center of circle
O, crosses the vertical line that straight line b is in the center of circle, forms right angled triangle OHB, in right angled triangle OHB, is calculated according to geometrical relationship, can
To export following equation：
B=D2⊿2/2(L+LIt is fixed)
When choosing b, do not consider first typically second apart from tolerance, and by basic hole system fine grade or the third moves and matched somebody with somebody
Close (i.e. D/db, D/dc), from the table of limits find corresponding to nominal dimension minimum clearance make be ⊿ 2, above-mentioned formula is then used again
Calculate b numerical value.
In actual applications, the width more some larger than the numerical value calculated is can use, one is because it is according to most to calculate
Bad situation；Two be space between still the first positioning hole 6 and the second positioning hole 7 and straight pin 3 and rhombus pin 4 can compensate away from
From tolerance 2 (L+L is fixed)；Three be that rhombus pin 4 is made rear sharp edge and wants rounding, so will be ground off at four tips of rhombus pin 4,
Thus gap increase.
Typically in engineering design, without complicated calculating, b and B values are directly selected according to alignment pin diameter, such as
Under：
| The diameter d of pin | 4~6 | 6~10 | 10~18 | 18~30 | 30~50 | ＞ 50 |
| B (millimeter) | 2 | 3 | 5 | 8 | 12 | 14 |
| B (millimeter) | d-1 | d-2 | d-4 | d-8 | d-10 | d-12 |
Wherein, in b- rhombus pins 4 circular arc portion air line distance,
Size on B- rhombus pin 4X-X directions.
The position error very little of the localization method of this form, allowable angle of inclination is：
Tg α=(δPosition 1y+δPosition 2y)/2L
=[(a1+⊿1+aFixed 1)+(a2+⊿2+aFixed 2)]/2L
Without 2L and 2L in above formulaIt is fixedTwo, so positioning precision is substantially increased.
During work, first straight pin 3 is carried out docking assembling with the first positioning hole 6, then again positioned rhombus pin 4 and second
Hole 7 carry out docking assembling, after assembling, check assembling effect, it is ensured that two positioning holes in the same plane, and positioning hole justify
Week does not injure tank surface coat.
It is described above, only it is the preferred embodiments of the present invention, any formal limitation is not made to the present invention, it is all
It is any simple modification, equivalent variations and the modification made according to the technical spirit of the present invention to above example, still falls within
In the protection domain of technical solution of the present invention.
Claims (9)
1. a kind of magnesium alloy LED light box method for assembling and positioning, it is characterized in that：Comprise the following steps：
(1) positioning hole is set：Two positioning holes are set on the front apron of lamp box housing, and two positioning holes are respectively the first positioning
Hole and the second positioning hole；
(2) straight pin is set：On lamp house body with the first positioning hole corresponding position set straight pin, straight pin it is a diameter of
9.95mm, the diameter tolerance of straight pin is 0.05mm；
(3) rhombus pin is set：Rhombus pin, the rhombus pin Y-Y are set with the second positioning hole corresponding position on lamp house body
Upper and lower ends on direction are each provided with the arc section of one section and the circular pegs identical radian measure, the rhombus pin X-X directions
It is set to diamond structure；
(4) assembling straight pin and the first positioning hole：Utilize on the front apron of the straight pin on lamp house body and lamp box housing
One positioning hole carries out docking assembling, it is ensured that have minimum guarantee gap during cylinder finger setting between straight pin and first positioning hole
0.05mm；
(5) assembling rhombus pin and the second positioning hole：Utilize on the front apron of the rhombus pin on lamp house body and lamp box housing
Two positioning holes carry out docking assembling, it is ensured that have minimum guarantee between second positioning hole on Y-Y directions during rhombus finger setting
Gap 0.05mm；
(6) inspect for acceptance：Carry out an acceptance inspection inspection to the straight pin and rhombus pin assembled, and surrounding tank surface coat can not have
It is damaged, it is ensured that lamp house body and lamp box housing are each in its defined same plane.
2. magnesium alloy LED light box method for assembling and positioning according to claim 1, it is characterized in that：It is described in step (3)
Size on rhombus pin Y-Y directions is consistent with the diameter dimension of the straight pin, and the size on the rhombus pin X-X directions can be with
Directly chosen according to the diameter dimension on Y-Y directions.
3. magnesium alloy LED light box method for assembling and positioning according to claim 1, it is characterized in that：It is described in step (3)
Rhombus pin is set to diamond shape with the second positioning hole junction, and remainder is set to cylindrical shape.
4. magnesium alloy LED light box method for assembling and positioning according to claim 1, it is characterized in that：It is described in step (1)
The diameter of first positioning hole and the second positioning hole is 10mm, diameter tolerance and the hole of first positioning hole and the second positioning hole
It is 0.05mm away from tolerance.
5. magnesium alloy LED light box method for assembling and positioning according to claim 1, it is characterized in that：The straight pin with it is described
The distance between rhombus pin and first positioning hole and the second positioning hole the distance between it is corresponding.
6. a kind of magnesium alloy LED light box assembles positioner, including lamp box housing and lamp house body, it is characterized in that：The lamp box
It is provided with housing on the lamp house body, the lamp house body and is provided with alignment pin, the alignment pin includes straight pin and water chestnut
Shape pin, the lamp box housing is connected by the straight pin and rhombus pin with the lamp house body, is set on the lamp box housing
It is equipped with and first positioning hole and second positioning hole corresponding with straight pin and rhombus pin is provided with front apron, front apron.
7. magnesium alloy LED light box according to claim 6 assembles positioner, it is characterized in that：The rhombus pin is with
Based on the connection center line of one positioning hole and the second positioning hole, alignment pin the right and left of center line both sides is respectively pruned one
Divide, and retain the diamond positioning pin of the column part with one fixed width, the rhombus on the Y-Y directions between the right and left
The diameter tolerance of pin is 0.05mm.
8. magnesium alloy LED light box according to claim 6 assembles positioner, it is characterized in that：The diameter of the straight pin
For 9.95mm, the diameter tolerance of straight pin is 0.05mm, and the straight pin and rhombus pin are determined with first positioning hole and second
Position hole to have during docking assembling it is minimum ensure gap 0.05mm, the straight pin and rhombus pin and first positioning hole and
Second positioning hole uses the excessive fit system of fine grade.
9. magnesium alloy LED light box according to claim 6 assembles positioner, it is characterized in that：First positioning hole and
The diameter of second positioning hole is 10mm, and the diameter tolerance and pitch-row tolerance of first positioning hole and the second positioning hole are
0.05mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710529264.XA CN107234572A (en) | 2017-07-01 | 2017-07-01 | Magnesium alloy LED light box method for assembling and positioning and device |
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|---|---|---|---|
| CN201710529264.XA CN107234572A (en) | 2017-07-01 | 2017-07-01 | Magnesium alloy LED light box method for assembling and positioning and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446376A (en) * | 2019-06-25 | 2019-11-12 | 中国船舶重工集团公司第七0七研究所 | A kind of upper cabinet subrack structure of asymmetric positioning |
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