CN104215156A - Key groove reference block and single-hole single and double key groove symmetry degree detector - Google Patents
Key groove reference block and single-hole single and double key groove symmetry degree detector Download PDFInfo
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- CN104215156A CN104215156A CN201410502722.7A CN201410502722A CN104215156A CN 104215156 A CN104215156 A CN 104215156A CN 201410502722 A CN201410502722 A CN 201410502722A CN 104215156 A CN104215156 A CN 104215156A
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Abstract
The invention discloses a key groove reference block for detecting an inner-hole single key groove and a symmetry degree detector matched with the key groove reference block in use, belongs to a special detection measurement tool and aims at solving the problems of complicated structure and poor detection reliability of an existing symmetry degree detector. The key groove reference block is provided with a convex key matched with a detected part key groove in size, wherein the convex key can be utilized to detect whether machining of the single-hole single key groove is reasonable or not, and after the key groove reference block is combined with a meter seat, a meter rod module, a dial indicator and other accessories, the symmetry degree and perpendicularity of the inner-hole single key groove and a symmetry error of an inner-hole double-key groove can be accurately detected. The key groove reference block is light in weight, detection can be performed on a machining device or a production field at any time, the production cost is saved, the labor intensity is reduced, the detection process is greatly simplified, the production efficiency is remarkably improved, meanwhile a judgment result is intuitive and reliable, and the key groove reference block is especially suitable for batch part detection.
Description
Technical field
The present invention relates to a kind of metering outfit, specifically, relate to the keyway reference block of the two keyway symmetries of Matched measurement endoporus list, verticality, and the detector that detects the two keyway symmetries of endoporus list.
Background technology
The symmetry measurement of shaft key groove is widely used in motor, lathe, automobile making and all axial workpieces with keyway connection, and the quality of keyway symmetry directly affects the effect of machinery assembling.If the width dimensions of keyway is processed very correctly, but the symmetry of keyway does not reach the requirement of form and position tolerance, while at this time assembling when the axle with key with the hole of keyway, can there is equally the situation that assembling is not entered, therefore, in machine industry, to two keyway symmetries, require very high.
In prior art, while measuring keyway symmetry, verticality (linearity), generally in process equipment or three-dimensional, measure, this inconvenient operation, labour intensity for reviewer person are large, and checkout equipment cost is high, production efficiency is low.
Notification number is that the patent documentation (applying date is on March 8th, 2012) of CN202452943 discloses the two keyway symmetry cubings of a kind of endoporus, symmetry for detection of the two keyways of inner circle, be specially, first take two symmetrical workplaces of keyway as reference measurement is to endoporus maximum length value, then Rotate 180 °, then measure its length and compare rear judgement symmetry error.But this instrument cannot be determined endoporus single key slot, whether symmetry is qualified, such as detecting the axial line symmetry error (axis that be keyway with part radial-axial do not overlap) of single keyway with respect to tested part, and error of perpendicularity value (being that keyway workplace is with axially not parallel), therefore in the underproof situation of endoporus single key slot, it is incorrect directly measuring the two keyway symmetries of endoporus.
Summary of the invention
In view of this, the present invention aims to provide a kind of simple in structure, easy and simple to handle, keyway reference block that can detect endoporus single key slot machining precision.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of keyway reference block, comprise " mouth " font keyway locating piece, the described keyway locating piece left and right sides is extended respectively the location side plate that Central Symmetry distributes downwards, this location side plate forms the convex key of coupling tested part keyway size, and the distance of described location side plate leading flank and trailing flank is no more than the distance between the front inwall of keyway locating piece and rear inwall, before and after described keyway locating piece, lower surface is arranged with respectively the locking ball of at least two protrusions, the distance of described location side plate leading flank and trailing flank is no more than the lower limit of tested part keyway design width, distance between described two blocks of location side plates is no more than the lower limit of tested part keyway design length.
Whether the keyway reference block of employing technique scheme can detect inner hole key slot as follows qualified, first the convex key two location side plates being formed inserts the keyway of tested part, guarantee that axial location steel ball and tested part endoporus hole wall on keyway locating piece are tangent, due to convex key length and width be no more than the lower limit of tested part keyway designed size, therefore in the good situation of inner hole key slot machining status, convex key easily inserts in keyway, if insert not enter or can not inject completely, inner hole key slot groove width be described, groove depth, there is underproof situation in keyway workplace or keyway root chamfer dimesion, if both sides and tested part keyway two workplaces are not parallel before and after convex key, keyway off center is described, or keyway and end face out of plumb.
Further limit, the described keyway locating piece left and right sides offers some symmetrical lightening holes.Lightening hole the weight that can alleviate keyway reference block is set, operate lighter.
Further limit, side plate middle part, described two location is provided with lower connecting portion, between described keyway locating piece left and right sides, is provided with connecting portion, and on this, connecting portion is in the line of symmetry position of keyway locating piece upper surface.Because keyway reference block center is hollow, along with increase service time, its standard size of the easy deformation effect of keyway locating piece, arranging of upper connection and lower connecting portion can guarantee that the keyway positioning block structure of " mouth " font is not yielding, thereby improves the intensity of keyway reference block.
The present invention also provides a kind of endoporus list two keyway symmetry detectors, it comprises keyway reference block, also comprises gauge stand, shows bar assembly and dial gauge, described gauge stand is fixed on keyway reference block, and described table bar assembly one end connects gauge stand, other end fixed installation dial gauge.
The detector of employing technique scheme can detect endoporus single key slot and whether the two keyways of endoporus are qualified.When the deviation of endoporus single key slot and keyway reference block hour, whether qualified, after increasing gauge stand, table bar assembly and dial gauge, can overcome the test problems of this less deviation if by the very difficult keyway that detects intuitively tested part of keyway reference block, processing separately.When detecting endoporus single key slot, first keyway reference block is inserted in inner hole key slot respectively near left side and right side, the gap value going out by centimeter check can judge that whether the groove width of endoporus single key slot, groove depth be qualified; Keyway reference block is slided and can detect single key slot verticality along part axial; Keyway reference block Rotate 180 ° difference is measured to endoporus single key slot left and right end face twice, can detect endoporus single key slot symmetry error value; While detecting the two keyway of endoporus, in inner hole key slot, along part axial, measure the left workplace of two symmetrical keys, after Rotate 180 °, measure the right workplace of two symmetrical keys, can judge the symmetry error of the two keyways of endoporus.
Further limit, described gauge stand has flat base level, can magnetic absorption between this reference field and keyway locating piece.Above-mentioned restriction makes the fixed form between gauge stand and keyway reference block more flexible, carries more convenient.
Further limit, described table bar assembly comprises the first table bar, the second table bar and the 3rd table bar, described the 3rd table bar is hinged between described the first table bar and the second table bar by rotating shaft, and described the first table bar can rotate with respect to gauge stand, and described the 3rd table bar fastens dial gauge by table.The table bar assembly of above-mentioned restriction makes the adjusting of dial gauge and measures convenient.
The present invention compared to existing technology, has following beneficial effect:
1, by keyway reference block, be placed in inner hole key slot and can judge that whether single key slot processing dimension is qualified, can also judge the obvious symmetry error of single key slot and the error of perpendicularity by range estimation.
2,, by dial gauge and table bar assembly, can accurately detect the symmetry error of the two keyways of endoporus single key slot and endoporus.
The present invention is simple in structure lightweight, keyway reference block weight is 0.91kg only, can detect the keyway of diameter of bore Φ 630mm groove width 110mm, and detect easy and simple to handle, detection efficiency is high, reviewer and operator can be intuitively at the scene any environment detect, be applicable to very much the particularly use of heavy parts of bulk article.
Accompanying drawing explanation
Fig. 1 is keyway reference block structural representation;
Fig. 2 is the front view of keyway reference block;
Fig. 3 is keyway reference block upward view;
Fig. 4 is the vertical view of keyway reference block;
Fig. 5 is that keyway reference block detects endoporus single key slot schematic diagram;
Fig. 6 is single key slot symmetry detector structural representation;
Fig. 7 and Fig. 8 are for detecting endoporus single key slot symmetry schematic diagram;
Fig. 9 and Figure 10 are for detecting the two keyway symmetry schematic diagram of endoporus.
Embodiment
In order to make those skilled in the art, the present invention may be better understood, below in conjunction with drawings and Examples, technical solution of the present invention further illustrated.
As shown in Fig. 1 ~ 4, a kind of keyway reference block, comprise " mouth " font keyway locating piece 1, the location side plate 2(Central Symmetry distribution that described keyway locating piece 1 left and right sides is extended respectively Central Symmetry distribution downwards refers to that two location side plates 2 sizes are identical, not only symmetrical distribution, and each location side plate 2 is also positioned at the middle part of keyway locating piece 1 left and right sides), two blocks of location side plates 2 form the lower convex key of coupling tested part keyway size, wherein locate the length coupling width of keyway of side plate 2, location side plate 2 matched keyway groove depths (being highly less than groove depth), the distance of location side plate 2 leading flanks 21 and trailing flank 22 is no more than the distance between the front inwall 11 of keyway locating piece 1 and rear inwall 12, this restriction is for the axial location steel ball 3 of protrusion is set on remaining lower surface 13 on keyway locating piece 1, here axial location steel ball 3 respectively has two, be symmetricly set on respectively on keyway locating piece 1 lower surface, front and back 13.In order to make in situation that the width of tested part keyway and Design of length are qualified, this keyway reference block can both insert in keyway, must guarantee that location side plate 2 leading flanks 21 and the distance of trailing flank 22 are no more than the lower limit of tested part keyway design width, distance between two blocks of location side plates 2 is no more than the lower limit of tested part keyway design length, even if the length and width of keyway are the keyway design minimum limit of size like this, the convex key of two location side plate 2 formation also can insert this keyway of coupling, facilitates its correlation parameter to keyway to assess.
For alleviating keyway reference block overall weight, the keyway reference block left and right sides offers 5 pairs of symmetrical lightening holes 15, keyway reference block weight alleviates greatly like this, uses more lightly, also can offer strip hole in keyway locating piece 1 both sides, front and back if necessary.Lightening hole 15 number can according to whole keyway reference block size and to the requirement of keyway reference block overall weight, suitably increase and decrease, this increase and decrease should guarantee that keyway reference block can adapt to the requirement of its detected intensity and rigidity.
Consider that keyway reference block is inner for hollow, after keyway reference block service time is long, the standard size of keyway locating piece 1 and location side plate 2 easy deformation effect keyway reference blocks, after diminishing when standard size, originally underproof keyway is rear after testing just may become specification product, for overcoming above-mentioned defect, guarantee accuracy when keyway reference block detects, at side plate 2 middle parts, two location, be provided with lower connecting portion 23, between keyway locating piece 1 left and right sides, be provided with the upper connecting portion 16 flushing with keyway reference block upper surface 14, on this, connecting portion 16 is positioned at the line of symmetry position of keyway reference block upper surface 14, keyway reference block is after frequent use is stressed like this, its structure is not yielding, corresponding serviceable life of improving keyway reference block.
As shown in Figure 5, use the concrete operations of above-mentioned keyway reference block to be: the convex key first two location side plates 2 being formed inserts in the keyway of tested part, guarantee that the axial location steel ball 3 on keyway locating piece 1 is tangent with tested part endoporus hole wall 8, due to convex key length and width be no more than the lower limit of tested part keyway designed size, therefore in the good situation of inner hole key slot machining status, convex key easily inserts in keyway, if insert not enter or can not inject completely, inner hole key slot groove width be described, groove depth, there is underproof situation in keyway workplace or keyway root chamfer dimesion, if both sides and tested part keyway two workplaces are not parallel before and after convex key, illustrate that keyway exists off-centring, or keyway and end face out of plumb.
For inner hole key slot, even if there is off-centring or the uneven situation of axial line in keyway, keyway reference block is still likely put into groove, in the situation that deviation is little, with keyway reference block, be to be only difficult to judge whether keyway exists off-centring or the uneven situation of axial line, and whether symmetry error and the error of perpendicularity be in allowed band.
In view of this, the application provides a kind of for accurately detecting the detector of endoporus single key slot symmetry and the error of perpendicularity and two keyway symmetry errors.
This detector structure as shown in Figure 6, it has increased gauge stand 4, table bar assembly 5, dial gauge 6 and Biao Ka 7 on the basis of keyway reference block, wherein said gauge stand 4 is fixed on keyway locating piece 1 by flat base level 41, preferably can magnetic absorption between gauge stand 4 and keyway reference block, be conducive to like this removing and installing between keyway reference block and gauge stand 4.
Table bar assembly 5 comprises the first table bar 51, the second table bar 52 and the 3rd table bar 53, the 3rd table bar 53 two ends are hinged between the first table bar 51 and the second table bar 52 by rotating shaft 511,521, the first table bar 51 rotates with respect to gauge stand 4, and described the 3rd table bar 53 blocks 7 fixing dial gauges 6 by table.
Fig. 7, Fig. 8 show whether how to utilize this detector accurately to detect tested part endoporus single key slot qualified, concrete steps are: first keyway reference block is inserted in the inner hole key slot of tested part near left side, dial gauge gauge head 61 is in endoporus inwall 8 parallel sliding vertically, according to dial gauge, show reading, find out endoporus minimum point, record now dial gauge reading T, then by keyway reference block near inner hole key slot right side, measure equally dial gauge reading T ', the gap value going out by twice centimeter check judges that whether the groove width of endoporus single key slot is qualified; Because location side plate 2 is highly less than keyway groove depth, so be gap design between bottom land and keyway reference block, whether in gap, filling in clearance gauge, can to detect keyway groove depth qualified.
The keyway reference block of putting into keyway is endwisely slipped along tested part, dial gauge gauge head 61 moves vertically at endoporus inwall 8, can draw the verticality of single key slot according to dial gauge gauge head 61 detected reading differences before and after keyway reference block sliding distance and movement.
In conjunction with Fig. 7 and Fig. 8, in the situation that groove width, groove depth and verticality are all qualified, next the symmetry of endoporus single key slot is detected, be specially: first by keyway reference block near part keyway left side, dial gauge gauge head 61 is measured endoporus inwall 8 and is read reading, then by Rotate 180 ° before and after detector, wherein keyway reference block is near part keyway right side, dial gauge gauge head 61 is measured endoporus inwalls 8 and is also read reading, and half of the error amount by twice survey measurements in front and back can calculate the symmetry error of endoporus single key slot.
Fig. 9 and Figure 10 show the symmetry that how to utilize this detector to detect the two keyways of tested part endoporus, concrete steps are: first keyway reference block is benchmark by take the left workplace of inner hole key slot shown in Fig. 9, measure the left workplace of two symmetrical inner hole key slots, record dial gauge reading (preferably dial gauge indicating value being dialled is 0), then by keyway reference block Rotate 180 °, it by the right workplace of inner hole key slot shown in Figure 10, is the right workplace of reference measurement two symmetrical inner hole key slots, record dial gauge reading, half of the twice measurement difference in dial gauge front and back is the two keyway symmetry errors of endoporus.
Above keyway reference block provided by the invention and the two keyway symmetry detectors of endoporus list are described in detail.The explanation of specific embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (6)
1. a keyway reference block, it is characterized in that, comprise " mouth " font keyway locating piece, the described keyway locating piece left and right sides is extended respectively the location side plate that Central Symmetry distributes downwards, this location side plate forms the convex key of coupling tested part keyway size, and the distance of described location side plate leading flank and trailing flank is no more than the distance between the front inwall of keyway locating piece and rear inwall, before and after described keyway locating piece, lower surface is arranged with respectively the locking ball of at least two protrusions, the distance of described location side plate leading flank and trailing flank is no more than the lower limit of tested part keyway design width, distance between described two blocks of location side plates is no more than the lower limit of tested part keyway design length.
2. keyway reference block according to claim 1, is characterized in that, the described keyway locating piece left and right sides is provided with some symmetrical lightening holes.
3. keyway reference block according to claim 2, is characterized in that, side plate middle part, described two location is provided with lower connecting portion, between described keyway locating piece left and right sides, is provided with connecting portion, and on this, connecting portion is in the line of symmetry position of keyway locating piece upper surface.
4. the two keyway symmetry detectors of endoporus list, is characterized in that, comprise the keyway reference block described in claim 1-3 any one, also comprise gauge stand, table bar assembly and dial gauge, described gauge stand is fixed on keyway reference block, and described table bar assembly one end connects gauge stand, and the other end is installed dial gauge.
5. the two keyway symmetry detectors of endoporus list according to claim 4, is characterized in that, described gauge stand has flat base level, can magnetic absorption between this reference field and keyway locating piece.
6. according to the two keyway symmetry detectors of the endoporus list described in claim 4 or 5, it is characterized in that, described table bar assembly comprises the first table bar, the second table bar and the 3rd table bar, described the 3rd table bar is hinged between described the first table bar and the second table bar by rotating shaft, described the first table bar can rotate with respect to gauge stand, and described the 3rd table bar fastens dial gauge by table.
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| CN201410502722.7A CN104215156B (en) | 2014-09-28 | 2014-09-28 | Keyway reference block and the double keyway symmetry detectors of endoporus list |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105081886A (en) * | 2015-09-21 | 2015-11-25 | 四川崇泰石油机械有限公司 | Center parting degree detecting tool for valve seat mounting hole in valve body machining process |
| CN105352417A (en) * | 2015-11-27 | 2016-02-24 | 沈阳飞机工业（集团）有限公司 | Notch symmetry gauge and application method thereof |
| CN108195270A (en) * | 2018-01-08 | 2018-06-22 | 纽威石油设备（苏州）有限公司 | A kind of valve body verticality measurement device |
| CN109708558A (en) * | 2018-08-20 | 2019-05-03 | 岳阳长炼机电工程技术有限公司 | A kind of multifunctional usage magnetic stand |
| CN110849265A (en) * | 2019-11-27 | 2020-02-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Reference interference technology condition detection tool and use method thereof |
| CN110879034A (en) * | 2019-11-24 | 2020-03-13 | 江苏苏麦克电力科技有限公司 | Detection apparatus for electric power fitting straightness that hangs down |
| CN112683142A (en) * | 2020-11-30 | 2021-04-20 | 山东齐鲁电机制造有限公司 | Tool and method for detecting symmetry degree of conical surface and double key grooves at steam end of steam turbine generator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081886A (en) * | 2015-09-21 | 2015-11-25 | 四川崇泰石油机械有限公司 | Center parting degree detecting tool for valve seat mounting hole in valve body machining process |
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| CN105352417B (en) * | 2015-11-27 | 2018-06-26 | 沈阳飞机工业（集团）有限公司 | A kind of notch symmetry gauge and its application method |
| CN108195270A (en) * | 2018-01-08 | 2018-06-22 | 纽威石油设备（苏州）有限公司 | A kind of valve body verticality measurement device |
| CN109708558A (en) * | 2018-08-20 | 2019-05-03 | 岳阳长炼机电工程技术有限公司 | A kind of multifunctional usage magnetic stand |
| CN110879034A (en) * | 2019-11-24 | 2020-03-13 | 江苏苏麦克电力科技有限公司 | Detection apparatus for electric power fitting straightness that hangs down |
| CN110879034B (en) * | 2019-11-24 | 2021-03-12 | 江苏苏麦克电力科技有限公司 | Detection apparatus for electric power fitting straightness that hangs down |
| CN110849265A (en) * | 2019-11-27 | 2020-02-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Reference interference technology condition detection tool and use method thereof |
| CN112683142A (en) * | 2020-11-30 | 2021-04-20 | 山东齐鲁电机制造有限公司 | Tool and method for detecting symmetry degree of conical surface and double key grooves at steam end of steam turbine generator |
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