CN2301743Y - Impact specimen notch projection apparatus - Google Patents
Impact specimen notch projection apparatus Download PDFInfo
- Publication number
- CN2301743Y CN2301743Y CN 97214545 CN97214545U CN2301743Y CN 2301743 Y CN2301743 Y CN 2301743Y CN 97214545 CN97214545 CN 97214545 CN 97214545 U CN97214545 U CN 97214545U CN 2301743 Y CN2301743 Y CN 2301743Y
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- CN
- China
- Prior art keywords
- projection screen
- reflective mirror
- projection
- big
- mirror holder
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- 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.)
- Expired - Fee Related
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to an impact specimen notch projection apparatus. The distance between a projection objective and a projection screen is 50 times of the focal distance of the projection objective. Two feet for installing a large reflective mirror holder of a large reflective mirror are inserted into slide grooves for fixing a guide wheel. The large reflective mirror holder moved and adjusted is tightly fixed by screw bolts. Adjusted ball screws are tightly fixed by nuts. Standard patterns countermarked on the transparent film stuck on the inner surface of the projection screen are accurately amplified by 50 times of patterns according to V-shaped and U-notch patterns, size and tolerance of GB2106-80 and gb 229-84. The inner surface can be countermarked with standard patterns directly.
Description
The utility model is a kind of optical projector for metal material check test sample piece V-arrangement and U-shaped notch geometry quality when doing impulse test.
When metal material is done impulse test, to prepare to have the test sample piece of V-arrangement or U-shaped breach in advance.For the shape and size of its breach, must meet the relevant regulations of GB2106%-80 and GB229-84.Because its breach is very little, tolerance is tighter again, so regulation will be checked accurately amplifying on 50 times the projector.Though at present some projector also can be tested to V-arrangement and U-shaped notch geometry, this projector belongs to large projector, for general, multi-functional and possess a series of enlargement ratios; Complicated operation, unsuitable special-purpose, and cost is very high.The projector that has belongs to simple type, and its enlargement ratio is not inconsistent or is inaccurate.If during with these projector check V-arrangements or U-shaped breach, can only be earlier the projected outline of its breach be described with tracing paper, and then measure and analyze, this is not only inconvenient but also be difficult to guarantee enough accuracys.
It is 50 times optical projector that the utility model aims to provide a kind of single accurately enlargement ratio, and it can be by directly comparing with standard conditions, accurately, the shape quality of Special Survey metal material V-arrangement and U-shaped breach quickly and easily.
The utility model is achieved in that projection objective on optical projector, its position is fixed, and the optical path distance between it and the projection screen is 50 times of its focal length.Big mirror holder in the projector is provided with the mechanism that the relative projection screen of big reflective mirror is moved forward and backward, and has above it to make the big reflective mirror mechanism of pitching up and down.When big reflective mirror moves forward and backward, just changed the distance between it and the projection screen.Under the situation of the optical parametric of projection objective and stationkeeping, the change of this distance can make enlargement ratio change, thereby has the function of regulating enlargement ratio; When regulating luffing mechanism, can change the angle between big reflective mirror and the projection screen; When regulating suitably and cooperating focusing, the face that resembles of projection image and projection panel (sensitive surface) are matched, thereby guarantee the good articulation and the uniformity coefficient of image on the projection screen.Simultaneously also can make enlargement ratio do fine adjusting.When if the enlargement ratio of projector has error, coordinate, moderately regulate by above-mentioned travel mechanism and luffing mechanism, will reach accurate 50 times enlargement ratio and clear uniform image effect.
In projection screen, stick a transparent membrane that is carved with standard pattern on the hand hay cutter surface (sensitive surface).This standard pattern is the accurate pattern that amplifies 50 times of size warp by the V-arrangement of GB2106-80 and GB229-84 regulation and U-shaped, and is marked with tolerance range by its tolerance.Also can not stick transparent membrane, and above-mentioned standard pattern directly is engraved in the projection screen inner surface.The projector objective table can move up and down with focus adjusting mechanism, can also install on the objective table to indulge-laterally mobile mechanism, above the band V-arrangement of rotation desire check or the test sample piece of U-shaped breach.Because the mode of taking projection objective to be fixed, so the adjusting by focus adjusting mechanism can make the image clearly that presents V-arrangement or U-shaped breach on the projection screen.Vertical when regulating-during transversing gear, promptly carrying test sample piece indulges-laterally moves, that its serration is also done on projection screen thereupon is vertical-laterally move, near and overlap onto on the standard pattern, can compare with standard pattern immediately, realization is checked intuitively the notch geometry quality and is judged with reference to tolerance range.
Concrete structure of the present utility model and implementation accompanying drawings are as follows:
Fig. 1 is the utility model structural profile synoptic diagram
Fig. 2 is a V-U v notch v standard pattern
Fig. 3 is a focus adjusting mechanism structural representation in the utility model
Fig. 4 is the big mirror holder structural representation of the utility model
The big mirror holder 15-of the big reflective mirror 6-of the 1-lower box 2-focus adjusting mechanism 3-little reflective mirror 5-of projection objective 4-projection screen 7-transparent membrane 8-housing 9-regulating block 10-fixed block 11-ball screw 12-nut 13-nut 14-screw 16-stator ring 16 '-the vertical guide block 25-of chute 17-focusing handwheel 18-objective table 19-step 20-fixed block 21-handwheel 22-hold-down nut 23-transverse slider 24-longitudinal sliding block 26-handwheel 27-loading platen 28-test sample piece 29, the big reflective mirror pin 31 of 30-, 32-leg 33-becomes the folding place
This projector comprises the lower box (1) of internal electric source system and light-source system.There is focus adjusting mechanism (2) top of lower box (1), and the focusing handwheel (17) that connects with gear, tooth bar is arranged above, and focusing handwheel (17) connects with objective table (18).When rotating focusing handwheel (17), just drive objective table (18) and move up and down, finish the focusing function.Projection objective (3) is equipped with in objective table (18) top, housing (8) bottom, and little reflective mirror (4), big reflective mirror (5) and projection screen (6) are housed in the housing (8).Optical path distance between projection objective (3) and the projection screen (6) is 50 times of projection objective (3) focal length, and the enlargement ratio that can guarantee projector like this is 50 times.If enlargement ratio is inaccurate or when error is arranged, can be regulated or eliminate by the position change of big reflective mirror (5).
Big reflective mirror (5) is installed on the big mirror holder (14), two footing (29,30) of big mirror holder (14) are inserted in the chute (16 ') of stator ring (16), and can laterally move back and forth, thereby can change or regulate distance between big reflective mirror (5) and the projection screen (6) along chute (16 ').The change of this distance can make enlargement ratio change or be adjusted.After enlargement ratio was harmonized, big mirror holder (14) was tightened up by screw (15).A regulating block (9) is fixed on the top of big mirror holder (14), adorns a fixed block (10) that has spherical recess on housing (8) top, and ball screw (11) links up them.Under the situation that big mirror holder (14) is tightened up by bolt (15), rotate ball screw (11), big mirror holder (14) tilts because of stress deformation, promptly drive the appropriate pitching of big reflective mirror (5), regulate projection image and match with this, reach the clear image effect of uniform on the projection screen (6) with projection screen (6) face.Also can reach the effect of fine adjusting simultaneously to enlargement ratio.Ball screw (11) is tightened up by nut (12) and (13), to guarantee reliable position after appropriate regulation.
The hand hay cutter surface sticks a transparent membrane (7) in the projection screen (6), and mint-mark has standard pattern above it.The size of GB2106-80 and GB229-84 regulation is pressed through accurately amplifying 50 times, as shown in Figure 2 by this pattern system.Wherein, solid line is the nominal size line, and dotted line is a tolerance range.
Fig. 3 is the vertical-traversing actuation mechanism that can install on the objective table (18).Fixed block (20) is contained in step (19) and locates.Handwheel (21) is a screw mandrel, when rotating it, just drives transverse slider (23) along laterally moving by hold-down nut (22).Transverse slider (23) go up to connect a vertical guide block (24), and there is the dovetail guide wheel in its bottom, rack and pinion mechanism, and link with the longitudinal sliding block that has the dovetail guide groove (25).Handwheel (26) axle head is a gear, drives longitudinal sliding block (25) when rotating handwheel (26) and is along the longitudinal movement.Longitudinal sliding block (25) also connects a little loading platen (27) that has light hole, and notched test sample piece (28) places in the middle of the hole.
Rotate focusing handwheel (17), realize focusing, on projection screen, can be tested the image of sample piece (28) breach clearly.When moderately rotating handwheel (26) and (21), can carry test sample piece (28) and move along vertical-transverse direction, the breach on projection screen this moment (6), image are also indulged thereupon-are laterally moved, and will be corresponding, and then to the two judgement of comparing with standard pattern shown in Figure 2.
Fig. 4 is the structural representation of the big mirror holder (14) among Fig. 1.Insert respectively in the chute of the opposite side guide wheel in the chute (16 ') of the guide wheel (16) among Fig. 1 two footing (29) of its bottom and (30).
For reducing the pitch regulation amount of big mirror holder (14), when manufacturing it, supporting leg (31) and (32) portion are kept vertical, its top bends slightly about (33) straight line place greatly.
Advantage of the present utility model: because the optical path distance between projection objective and the projection screen is the projection objective focal length 50 times, because big mirror holder is provided with mobile and luffing mechanism, can makes enlargement ratio reach 50 times, and pass through again Adjusting can be eliminated the error of enlargement ratio, has both guaranteed accurately multiplying power, implements and very simple; Simultaneously also because Be provided with the V of 50 times of the satisfactory amplifications that is marked with tolerance range-U-shaped breach standard pattern on the projection screen, can advance Row is comparison inspection intuitively, and will describe earlier with translucent drawing paper the profile of serration before not resembling, and analyzes again Measure, thereby reach accurately, effect easily.
Claims (3)
1. impact specimen breach projector is equipped with projection objective, little reflective mirror, big reflective mirror and projection screen, it is characterized in that optical path distance between projection objective (3) and the projection screen (6) is 50 times of projection objective (3) focal length,
Be inserted in the chute (16 ') of stator ring (16) in order to (14) two footing of big mirror holder (29,30) that big reflective mirror (5) is installed, big mirror holder (14) footing (29,30) that moves after regulating is tightened up by bolt (15), and the ball screw after the adjusting (11) is tightened up by nut (12,13).
2. projector according to claim 1, the standard pattern that it is characterized in that the last mint-mark of transparent membrane (7) that projection screen (6) inner surface sticks are accurately to amplify 50 times pattern by the V-arrangement of GB2106-80 and GB229-84 regulation and U-shaped notch geometry, size and tolerance thereof.
3. projector according to claim 2 is characterized in that the direct mint-mark standard pattern of projection screen (6) inner surface, and this pattern is accurately to amplify 50 times pattern by the V-arrangement of GB2106-80 and GB229-84 regulation and U-shaped notch geometry, size and tolerance thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97214545 CN2301743Y (en) | 1997-04-23 | 1997-04-23 | Impact specimen notch projection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97214545 CN2301743Y (en) | 1997-04-23 | 1997-04-23 | Impact specimen notch projection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2301743Y true CN2301743Y (en) | 1998-12-23 |
Family
ID=33931959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97214545 Expired - Fee Related CN2301743Y (en) | 1997-04-23 | 1997-04-23 | Impact specimen notch projection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2301743Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604379A (en) * | 2013-10-29 | 2014-02-26 | 中国船舶重工集团公司第七二五研究所 | Fixing device for round-bar stretching sample with gap and measurement method for diameter at gap |
-
1997
- 1997-04-23 CN CN 97214545 patent/CN2301743Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604379A (en) * | 2013-10-29 | 2014-02-26 | 中国船舶重工集团公司第七二五研究所 | Fixing device for round-bar stretching sample with gap and measurement method for diameter at gap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |