CN102353319A - Non-planar artificial-plate form and position deviation testing instrument and testing method - Google Patents
Non-planar artificial-plate form and position deviation testing instrument and testing method Download PDFInfo
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- CN102353319A CN102353319A CN2011101933178A CN201110193317A CN102353319A CN 102353319 A CN102353319 A CN 102353319A CN 2011101933178 A CN2011101933178 A CN 2011101933178A CN 201110193317 A CN201110193317 A CN 201110193317A CN 102353319 A CN102353319 A CN 102353319A
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Abstract
The invention relates to a non-planar artificial-plate form and position deviation-testing instrument and a testing method. The invention aims at that the provided instrument and method should have the characteristics of accuracy in data detection and convenience in detecting operation, and the instrument has a simple structure and is easy to manufacture. The invention has the technical scheme that: the non-planar artificial-plate form and position deviation-testing instrument is formed in the way that: 1) one edges of two rectangular planar plate bodies are connected and fixed into a right angle; 2) two central lines are respectively manufactured on two working surfaces; 3) two transverse scales and a longitudinal scale are manufactured on a planar working surface; and a horizontal scale and a vertical scale are manufactured on a vertical working surface; 4) two pairs of movable slots are manufactured on the planar working surface; and a pair of movable slots are manufactured on the vertical working surface; 5) a clamping tool is respectively positioned on each movable slot; and 6) a measuring scale is respectively manufactured at the vertical part of the clamping tool. The non-planar artificial-plate form and position deviation-testing method is carried out according to the following steps: step 1) and step 2) are the same as above; 3) a non-planar artificial plate can be stably placed onto the planar working surface; and 4) the non-planar artificial-plate form and position deviation can be measured and calculated.
Description
Technical field
The present invention relates to a kind of testing tool and method of testing of artificial board, especially the testing tool of non-planar wood-based plate and method of testing.
Background technology
Non-planar wood-based plate R (shown in Figure 9) is mainly used in making fashion curved surface furniture and various office, family expenses chair.Owing to be biological material making such as bamboo timber; Have natural unbalanced stress weighing apparatus and machining stress accumulation phenomena; If production technology is handled not science; Product can be because the release of stress appears in the variation of temperature and humidity after processing; Thereby cause occurring distortion to a certain degree; This distortion mainly shows as profile skew and torsional deformation phenomenon, thereby causes waste product, can't be used for making the curved surface furniture of fashion and the office and the family expenses chair of various moulding.For preventing that this distortion from surpassing people's tolerance, need detect the shape position error of non-planar wood-based plate, to determine whether to meet the requirement of party in request.
The non-planar wood-based plate has become the special-purpose board of fashion furniture, various office and family expenses chair since coming out, achieved the big industry of upstream and downstream number in 10,000,000,000 output values.But because its non-planar resemblance, never the testing apparatus and the method for testing of science are tested the degree that the non-planar wood-based plate deforms after processing; Detection method for many years mainly is a Standard Module sample method of agreement, i.e. the Standard Module sample that manufacturing enterprise's use purchaser provides and the moulding wood-based panel product of production agree with by part, detect the degree of distortion.This method can only be implemented in the manufacturing enterprise of purchaser's appointment; Can't other occasions outside manufacturing enterprise use; Can't form the detection means and the method for generally acknowledging of versatility; It is blank flat that versatility detection method that fields such as general trade and quality testing, arbitration need and checkout equipment remain, and brought bigger inconvenience for the production of non-planar wood-based plate and the each side such as management of use, trade both at home and abroad, quality arbitration and government.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art; It is the testing tool of shape position error that a kind of non-planar wood-based plate deformation extent is provided; This instrument should be able to be tested the deformation extent that non-planar wood-based plate shaped position occurs; Have detect data accurately, detecting operation characteristics easily, and simple in structure, make easily, cost is not high.
The versatility method of testing that it is shape position error that another object of the present invention provides a kind of non-planar wood-based plate deformation extent is to realize the detection timely and effectively of non-planar wood-based plate deformation extent.
The technical scheme that the present invention adopts is: non-planar wood-based plate shape position error tester is characterized in that this tester comprises:
1) one side of two rectangle plane plate bodys links to each other and is fixed into the right angle, and the right angle deviation is≤1mm/m; Wherein be used for the plane workplace of the plane plate of horizontal checkout workplace as the tester worktable, another piece plane plate is as the facade workplace of tester worktable; Two workplace intersecting lenses are zero line;
2) on tester worktable two workplaces, make a conduct respectively the center line that scale and specimen benchmark are used is set, the center line on the workplace of plane is vertical with zero line and join with the central point of zero line; Center line on the facade workplace is also vertical with zero line and join with the central point of zero line;
3) make the front and back horizontal scale of two parallel and a vertical scale on the plane workplace of tester worktable perpendicular to zero line; The central lines of vertical scale left side and plane workplace, the zero starting point of its metering reading is the joining of this vertical scale and zero line; Article two, horizontal scale is parallel with zero line, with the inner side edge of the nearer first horizontal scale of zero line apart from zero line 200mm, with the inner side edge of the zero line second horizontal scale far away outer side edges 200mm apart from workplace; Article two, horizontal scale all is that zero starting point is extended with the right side and the sign metering reading to the left side of plane workplace respectively with the center line;
Make mutually perpendicular horizontal ruler and Vertical surveyors' staff on the facade workplace of tester worktable; Wherein the distance of horizontal ruler lower side and zero line is 500mm, and this horizontal ruler serves as that zero starting point is extended with the right side and the sign metering reading to the left side of facade workplace respectively with the joining of itself and center line; The central lines of the left side of Vertical surveyors' staff and facade workplace, the zero starting point of its metering reading is the joining of center line and zero line;
4) make two pairs of shifting chutes that are parallel to each other with zero line on the workplace of plane, wherein the outer side edges of a pair of shifting chute is close to the inner side edge of the first horizontal scale, and another outer side edges to shifting chute is close to the inner side edge of the second horizontal scale; Make a pair of shifting chute that is parallel to each other with zero line on the facade workplace, this upper side edge to shifting chute is close to the horizontal ruler lower side;
The above every pair shifting chute all is symmetrically distributed in workplace center line both sides, and the right-hand member of shifting chute that wherein is positioned at center line left side is apart from center line 100mm, and the top of its left end extends to the left side of workplace; And the left end of shifting chute that is positioned at the center line right side is apart from center line 100mm, and the top of its right-hand member extends to the right edge of workplace;
The cavity of shifting chute xsect partly is " worker " font;
5) all locate " L " shape jig that can horizontally slip in each shifting chute, this jig comprises horizontal component that places in the shifting chute and the vertical component that is used to test; Horizontal component is shaped on the vertical through hole that passes through use as fastening bolt; Vertical component meets at right angles with the vertical of workplace, and the right angle deviation is≤1mm/m; Self fixedly coupling assembling of usefulness is housed in the jig;
6) all make the measurement scale on the vertical component of all jigs; The one side towards the outside of the vertical component of all jigs is as the positive scale of making on the workplace of plane, and the one side up of the vertical component of all jigs is as the positive scale of making on the facade workplace; Vertical component all is that zero starting point is scribed scale with the workplace, and the scale metering reading is 100～300mm;
Said coupling assembling comprises rotating fastening bolt that is positioned at horizontal component and the locating piece that is positioned at the shifting chute bottom, is shaped on the screw that matches with fastening bolt on the locating piece; Under the fastening bolt effect, to be clamped in the shifting chute with horizontal component.
Flatness≤the 1mm/m on said two plane plates surface.
Length >=the 800mm of said facade workplace and plane workplace, width >=800mm, thickness >=20mm.
Said plane plate is any one in polyvinyl chloride panel, aluminium sheet, iron plate and the high density fiberboard.
The measures range of the scale on the said jig is 100～300mm.
Said scale divisions value is 0.5mm.
Minister 300mm, wide 21mm, dark 5mm on the said shifting chute, the long 270mm in bottom, wide 21mm, dark 2～5mm; The penetrating groove width 10mm in middle part, long 250mm.
The long 120mm of the horizontal component of said jig, wide and thickness is 20m; High 105～the 305mm of vertical component, wide and thickness is 20mm.
Non-planar wood-based plate shape position error method of testing, carry out according to the following steps:
1) one side of two rectangle plane plate bodys links to each other and is fixed into the right angle, and the right angle deviation is≤1mm/m; Wherein a plane plate of the measurement non-planar wood-based plate of horizontal positioned is as the plane workplace, and the plane plate that another piece is measured the setting layout of non-planar wood-based plate is the facade workplace;
2) surface of plane workplace and facade workplace respectively makes a center line, and two center lines all dock perpendicular to the intersecting lens of two workplaces and at this intersecting lens place, and the intersecting lens of two workplaces is a zero line;
3) the non-planar wood-based plate is steadily put be placed on and be adjusted to the center on the workplace of plane on the workplace of plane and abut against on the facade workplace;
4) on the facade workplace apart from zero line 500mm place, measure the distance of non-planar wood-based plate near the center line of the right and left of facade workplace part and facade workplace, half of the absolute value that the gained data are subtracted each other is the profile degrees of offset;
5) on the facade workplace apart from zero line 500mm place, measure the left side and right side and facade workplace surperficial distance of non-planar wood-based plate near facade workplace part front surface, half of the absolute value that the gained data are subtracted each other is the torsional deformation degree.
Flatness≤the 1mm/m on two plane plate surfaces.
The method of application of this non-planar wood-based plate shape position error tester is:
1, shape position error method of testing:
1) test of profile degrees of offset:
Test samples on the tester location: the tester work plan and elevation plane about to move to the left and right sides, respectively, fixtures, and will make room plywood samples were placed in non-planar flat work surface tester and rely on the facade of the face, by adjusting the mobile flat work surface before and after the corresponding fixture to move the test sample, the test sample is placed in the middle of the flat face (front left and right lateral face fixture in the plane on the scale corresponds to values are identical, so after the fixtures in the plane transverse face value on the ruler corresponds exactly the same, then the sample is placed in the middle of the flat face); fixed fixtures.
The method of testing of profile degrees of offset: the high and low position of regulating sample; Make that it is identical in two metering reading values on the jig scale of the preceding left and right sides, make two metering reading values on the jig scale of the left and right sides, back identical simultaneously; Move the jig on the facade workplace then, holding clamp behind the engaged test sample.At this moment, read the metering reading value of jig present position, be accurate to 0.5mm on facade workplace horizontal ruler upper left side and right side.Half of the absolute value that horizontal ruler left side reading value and right side reading value subtract each other on the facade workplace is the test value of profile degrees of offset.
2) test of torsional deformation degree:
The position of specimen on tester: the position adjustments of sample requires identical during with the test of profile drift rate.
The method of testing of torsional deformation degree: regulate the left and right sides jig on the facade workplace, make it touch sample respectively, holding clamp then, read sample positive with left and right sides jig on scale contact the numerical value on the lateral location, be accurate to 0.5mm; Half of the absolute value that the numerical value of scale subtracts each other on the left and right sides jig that reads is the test value of the torsional deformation degree of institute's test sample article.
The invention has the beneficial effects as follows: can supply method of testing and the testing tool generally promoted owing to provide; Not only can realize instant observing and controlling to non-planar wood-based plate shape position error; And test data is accurate, easy to detect, is suitable as universal standard method fully and applies.In addition, apparatus structure provided by the invention is simple, and is easy to operate, makes easily, and cost is not high yet.
Description of drawings
Fig. 1 is a main TV structure synoptic diagram of the present invention.
Fig. 2 is a right TV structure synoptic diagram of the present invention.
Fig. 3 is a plan structure synoptic diagram of the present invention.
Fig. 4 is the A-A structure for amplifying synoptic diagram among Fig. 3.
Fig. 5 is that B-B among Fig. 4 is to structural representation.
Fig. 6 is that the master of detected state of the present invention looks synoptic diagram.
Fig. 7 is that synoptic diagram is looked on the right side of detected state of the present invention.
Fig. 8 is the schematic top plan view of detected state of the present invention.
Fig. 9 is the solid and the structural representation of non-planar wood-based plate.
Embodiment
1, tester Working table structure design and production method:
Extremely shown in Figure 3 like Fig. 1; Non-planar wood-based plate shape position error tester is designed with the rectangle plane plate body (two square or rectangulars that the plane plate preferred size is identical) of two workplaces of facade and plane; One side of two plane plates links to each other and is fixing; Vertical each other meeting at right angles between facade workplace 20 and the plane workplace 10, the right angle deviation is≤1mm/m; Flatness≤the 1mm/m of workplace;
2) workplace dimensional requirement: length >=800mm, wide >=800mm, thickness >=20mm;
3) setting of scale on the workplace:
A) facade workplace scale: facade workplace scale is designed to mutually perpendicular two scales.Vertically the left side of scale 20-1 is the center line 21 of facade workplace, with its zero line 50 (being the intersecting lens of facade workplace and plane workplace) of below be zero starting point.The downside of horizontal ruler 20-2 (indicating the measurement limit of metering scale) is 500mm with the distance of zero line 50, and horizontal ruler and center line point of crossing are zero starting point, and dual-side extends metering reading to the left and right respectively; The scale divisions value is 0.5mm.
B) plane workplace scale: the scale of plane workplace is designed to the two horizontal scales in front and back, a vertical scale 10-1 (being vertical scale).Vertically the scale left side be the center line 11 of plane workplace, and the point of crossing of itself and zero line 50 is zero starting point, extends metering reading laterally.Laterally scale and zero line 50 laterally arrange, and the measurement limit (being positioned at the inboard of scale) of the sign metering scale of the horizontal scale (i.e. the first horizontal scale 10-11) of inboard (being a direction side up among Fig. 3) and said zero line are apart from 200mm; Measurement limit (being positioned at the inboard of scale) and the plane workplace outer side edges 10-3 of the sign metering scale of the horizontal scale (i.e. the second horizontal scale 10-12) in the outside (being a direction side down among Fig. 3) (being a side of and furthest parallel with intersecting lens on the workplace of plane) is apart from 200mm; Laterally the scale metering reading all with workplace center line 11 point of crossing, plane be zero starting point, dual-side extends reading to the left and right respectively; The scale divisions value is 0.5mm.
C) the workplace scale can be directly to be engraved on the position of workplace regulation, also can be with the mode of inlaying, the scale of metal or plastics (must surface abrasion resistance) is embedded on the position of workplace regulation.
4) setting of tester jig position: a pair of jig 3-1 (referring to Fig. 1) is set on the facade workplace; Jig is close to the downside (indicating a side of metering symbol) of facade workplace scale; The jig upside is close to the downside (parallel with zero line 50, and apart from 500mm) of horizontal ruler 20-2.The plane workplace is provided with two pairs of jigs (referring to Fig. 3), laterally arranges before and after being and parallel with zero line 50.The measurement limit that preceding jig 3-3 is close to the sign metering scale of the second horizontal scale 10-12 (is positioned at the inboard of scale; With plane workplace outer side edges apart from 200mm); The measurement limit that back jig 3-2 is close to the sign metering scale of the first horizontal scale 10-11 (is positioned at the inboard of scale; With the distance of zero line 50 be 200mm).
5). the tester material requirements:
The material requirements wood property of making tester is stable, indeformable, warpage not, density of material>=0.8g/cm
3, to increase the stability of worktable.The more stable plastic plates of performance such as general employing Polyvinylchloride also can be selected aluminium matter, iron quality metal material or the high density fiberboard of thickness at 15～50mm for use.
2, the design of tester jig requires with manufacturing:
1) the tester jig recommend to use the stainless steel material aluminum alloy materials of surface Hardening Treatment (or through) to be processed into its structure Design processing request such as Fig. 4, shown in Figure 5.The vertical component 3-11 of horizontal component 3-10 that contacts with workplace and test usefulness is vertical each other, forms " L " shape, and the right angle deviation is≤1mm/m; The horizontal component of jig is shaped on vertical through hole, passes through use as fastening bolt 5.
2) jig size recommendation: the long 120mm of the size of the horizontal component that jig contacts with workplace, wide and thickness is 20mm; The vertical component of jig is of a size of high 55～305mm, and wide and thickness is 20mm.
3) measure method for making with scale on the jig: the scale on the jig all is produced on the vertical component of jig.For observing conveniently, the jig on the workplace of plane (back jig 3-2 and preceding jig 3-3) scale is located at the front (person's that is the oriented manipulation the one side of jig vertical component; Referring to Fig. 4, Fig. 5), the jig on the facade workplace (jig 3-1) scale is located at top (i.e. the one side up) of jig vertical component.The sign value of scale is: 50～300mm, and scale division value is 0.5mm; Zero starting point metering reading position all is workplaces separately.Scale can directly be engraved on the position of jig regulation, also can be with the mode of pasting, the scale of metal or plastics (must surface abrasion resistance) is sticked on the position of jig regulation.
4) method of opening of the shifting chute of tester jig and dimensional requirement (referring to Fig. 4, Fig. 5): on workplace, make the shifting chute of ccontaining jig, the cavity of shifting chute xsect partly is " worker " font; Every pair of shifting chute all is symmetrically distributed in workplace center line both sides, and the right-hand member of shifting chute that wherein is positioned at center line left side is apart from center line 100mm, and the top 3-61 of its left end extends to the left side of workplace; And the left end of shifting chute that is positioned at the center line right side is apart from center line 100mm, and the top 3-61 of its right-hand member extends to the right edge of workplace;
Concrete method for making is to be the boundary with the center line, to the left and right both sides separately 100mm play fluting, groove width 22mm, the flute length >=300mm of dark 5mm part, the top 3-61 that forms shifting chute (embeds and slides and use as the horizontal component of jig; Flute length is decided according to the width of workplace); The reverse side same position of corresponding workplace is opened the groove of same widths size (22mm), flute length 270mm, and groove depth 2～5mm, the bottom 3-63 that forms shifting chute is (as spacer pad 4 embeddings of jig and the use of sliding; Groove depth requires to decide according to workplace thickness and pad thickness); At last, open the penetrating groove of system (penetrating and mobile space), saturating groove groove width 10mm, long 250mm, the penetrating groove 3-62 in the middle part of formation along the center line of groove as fastening bolt 5; The shifting chute of Zu Chenging thus, the cavity of its xsect partly is " worker " font.
The shifting chute of jig requires straight smooth, moves smoothly.As what select for use is the sheet material of high density fiberboard class, the polishing of hardening of reply shifting chute surface.
5) jig move and fixing: when needing jig in groove, to move, unclamp fastening bolt 5 and spacer pad 4, behind the position that jig is moved to need to measure, tighten fastening bolt 5 and spacer pad 4 in groove, jig promptly is fixed on the worktable.
Claims (10)
1. non-planar wood-based plate shape position error tester is characterized in that this tester comprises:
1) one side of two rectangle plane plate bodys links to each other and is fixed into the right angle, and the right angle deviation is≤1mm/m; Wherein be used for the plane workplace (10) of the plane plate of horizontal checkout workplace as the tester worktable, another piece plane plate is as the facade workplace (20) of tester worktable; Two workplace intersecting lenses are zero line (50);
2) on tester worktable two workplaces, make a conduct respectively the center line that scale and specimen benchmark are used is set, the center line on the workplace of plane (11) is vertical with zero line and join with the central point of zero line; Center line on the facade workplace (21) is also vertical with zero line and join with the central point of zero line;
3) make the front and back horizontal scale of two parallel and a vertical scale on the plane workplace of tester worktable perpendicular to zero line; The central lines of vertical scale (10-1) left side and plane workplace, the zero starting point of its metering reading is the joining of this vertical scale and zero line; Article two, horizontal scale is parallel with zero line, with the inner side edge of the nearer first horizontal scale (10-11) of zero line apart from zero line 200mm, with the inner side edge of the zero line second horizontal scale (10-12) far away outer side edges 200mm apart from workplace; Article two, horizontal scale all is that zero starting point is extended with the right side and the sign metering reading to the left side of plane workplace respectively with the center line;
Make mutually perpendicular horizontal ruler (20-2) and Vertical surveyors' staff (20-1) on the facade workplace of tester worktable; Wherein the distance of horizontal ruler lower side and zero line is 500mm, and this horizontal ruler serves as that zero starting point is extended with the right side and the sign metering reading to the left side of facade workplace respectively with the joining of itself and center line; The central lines of the left side of Vertical surveyors' staff and facade workplace, the zero starting point of its metering reading is the joining of center line and zero line;
4) make two pairs of shifting chutes that are parallel to each other with zero line (3-6) on the workplace of plane, wherein the outer side edges of a pair of shifting chute is close to the inner side edge of the first horizontal scale, and another outer side edges to shifting chute is close to the inner side edge of the second horizontal scale; Make a pair of shifting chute that is parallel to each other with zero line on the facade workplace, this upper side edge to shifting chute is close to horizontal ruler (20-2) lower side; The cavity of shifting chute xsect partly is " worker " font;
The above every pair shifting chute all is symmetrically distributed in workplace center line both sides, and the right-hand member of shifting chute that wherein is positioned at center line left side is apart from center line 100mm, and its left end top extends to the left side of workplace; And the left end of shifting chute that is positioned at the center line right side is apart from center line 100mm, and its right-hand member top extends to the right edge of workplace;
5) all locate " L " shape jig that can horizontally slip in each shifting chute, this jig comprises horizontal component (3-10) that places in the shifting chute and the vertical component (3-11) that is used to test; Horizontal component is shaped on the vertical through hole that passes through use as fastening bolt; Vertical component is vertical with workplace to meet at right angles, and the right angle deviation is≤1mm/m; Self fixedly coupling assembling of usefulness is housed in the jig;
6) all make the measurement scale on the vertical component of all jigs; The one side towards the outside of the vertical component of all jigs is as the positive scale of making on the workplace of plane, and the one side up of the vertical component of all jigs is as the positive scale of making on the facade workplace; Vertical component all is that zero starting point is scribed scale with the workplace, and the scale metering reading is 100～300mm;
Said coupling assembling comprises rotating fastening bolt (5) that is positioned at planar section and the locating piece (4) that is positioned at the shifting chute bottom, is shaped on the threaded hole that matches with fastening bolt on the locating piece.
2. non-planar wood-based plate shape position error tester according to claim 1 is characterized in that: the flatness≤1mm/m on said two plane plates surface.
3. non-planar wood-based plate shape position error tester according to claim 2 is characterized in that: the length >=800mm of said facade workplace and plane workplace, width >=800mm, thickness >=20mm.
4. according to claim 2 or 3 described non-planar wood-based plate shape position error testers, it is characterized in that: said plane plate is any one in polyvinyl chloride panel, aluminium sheet, iron plate and the high density fiberboard.
5. non-planar wood-based plate shape position error tester according to claim 4, it is characterized in that: the measures range of the scale on the said jig is 100～300mm.
6. non-planar wood-based plate shape position error tester according to claim 5, it is characterized in that: said scale divisions value is 0.5mm.
7. non-planar wood-based plate shape position error tester according to claim 6 is characterized in that the long 300mm in top (3-61) of said shifting chute, wide 21mm, dark 5mm, the long 270mm in bottom (3-63), wide 21mm, dark 2～5mm; The wide 10mm of middle part penetrating groove (3-62), long 250mm.
8. non-planar wood-based plate shape position error tester according to claim 7 is characterized in that the long 120mm of horizontal component (3-10) of said jig, widely is 20mm with thickness; High 105～the 305mm of vertical component (3-11), wide and thickness is 20mm.
9. non-planar wood-based plate shape position error method of testing, carry out according to the following steps:
1) one side of two rectangle plane plate bodys links to each other and is fixed into the right angle, and the right angle deviation is≤1mm/m; Wherein a plane plate of the measurement non-planar wood-based plate of horizontal positioned is as the plane workplace, and the plane plate that another piece is measured the setting layout of non-planar wood-based plate is the facade workplace;
2) surface of plane workplace and facade workplace respectively makes a center line, and two center lines all dock perpendicular to the intersecting lens of two workplaces and at this intersecting lens place, and the intersecting lens of two workplaces is a zero line;
3) the non-planar wood-based plate is steadily put be placed on and be adjusted to the center on the workplace of plane on the workplace of plane and abut against on the facade workplace;
4) on the facade workplace apart from zero line 500mm place, measure the non-planar wood-based plate near the right and left of facade workplace part respectively with the distance of the center line of facade workplace, the absolute value of half of gained data difference is the profile degrees of offset;
5) on the facade workplace apart from zero line 500mm place, measure the non-planar wood-based plate near the left side of the facade workplace part front surface distance surperficial with the facade workplace respectively with the right side, the absolute value of half of gained data difference is the torsional deformation degree.
10. non-planar wood-based plate shape position error method of testing according to claim 1 is characterized in that: the flatness≤1mm/m on two plane plate surfaces.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673827A (en) * | 2013-12-23 | 2014-03-26 | 陈焕祥 | Simple measuring plate |
| CN106323146A (en) * | 2016-11-17 | 2017-01-11 | 讯龙型材折弯（合肥）有限公司 | Detection device for L-shaped arc bending parts |
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| Publication number | Publication date |
|---|---|
| CN102353319B (en) | 2013-02-13 |
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