CN202471019U - Measuring instrument for revolving body part - Google Patents
Measuring instrument for revolving body part Download PDFInfo
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- CN202471019U CN202471019U CN2011205376982U CN201120537698U CN202471019U CN 202471019 U CN202471019 U CN 202471019U CN 2011205376982 U CN2011205376982 U CN 2011205376982U CN 201120537698 U CN201120537698 U CN 201120537698U CN 202471019 U CN202471019 U CN 202471019U
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Abstract
The utility model discloses a measuring instrument for a revolving body part, comprising a base, an upright column fixed on the base, and an optical probe which is vertically and movably assembled on the upright column; wherein, a working table used for placing and rotating a part is correspondingly arranged on the base and under the optical probe; the working table comprises a rotary table and an angular displacement adjusting table which are arranged from bottom to top; the angular displacement adjusting table comprises a first angular displacement table and a second angular displacement table, the first angular displacement table and the second angular displacement table respectively comprise a first deflecting platform and a second deflecting platform, deflecting axes around which the first deflecting platform and the second deflecting platform rotate are perpendicular to each other and are parallel to a plane where a light curtain of the optical probe is located. The measuring instrument of the utility model has the beneficial effects that: the angular displacement adjusting table adopts rotation driving mechanisms to separately drive the two angular displacement tables to deflect around the deflecting axes parallel to the plane where the light curtain of a collimated light source is located, so as to realize orthogonal coupling adjustment for a deflecting angle of the working table, thus a spatial position of a workpiece can be captured accurately, thereby ensuring accurate positioning and measurement for the part.
Description
Technical field:
The utility model relates to the precise detection technology field.
Background technology:
For realizing the measurement of revolving parts physical dimension; The optical measuring head that has use source of parallel light and ccd image sensor formation in the prior art carries out the method for noncontacting measurement to the outline data of part; Like the disclosed a kind of measuring method of Chinese patent publication number CN 101629816A; This method relies on a rotary table and realizes the rotation to workpiece; The rotation that this rotary table specifically adopts the workpiece of placing on the structure that the is rotatably assorted realization worktable of axle and axle sleeve can't realize part is ajusted the accurate adjusting of (guaranteeing that axis of workpiece and gauge head light curtain are perpendicular).At present; Known worktable adjusting gear is mostly through wedge or worm-and-wheel gear; The reading result who adds instrument itself by means of level meter or standard component realizes the horizontal adjustment to worktable, and mostly only can be implemented in the horizontal adjustment on the one dimension direction.For the non-contact optical measuring equipment,, must introduce the adjustment error, thereby it is not high to cause adjusting precision owing to can make moving of exemplar in the vertical direction in the adjustment process yet.Leveling on the one dimension direction can't guarantee the integral level of worktable; For revolution type tested part, require its axis of rotation to be the surveying instrument that vertical state is put simultaneously, above-mentioned adjustment worktable all can't be realized.
The utility model content:
The purpose of the utility model is to provide a kind of and belongs to the vertical measuring instrument in plane through regulating the axis of rotation that can make tested revolving parts with the light curtain of flash ranging head.
The technical scheme of the measuring instrument of the utility model is: a kind of measuring instrument; Comprise base and be fixed on the column on the base; The vertical guiding in column upper edge moves and is equipped with optical measuring head; Corresponding being provided with is used to place the also worktable of rotating part in the optical measuring head below on the base; Optical measuring head comprises the source of parallel light of formation light curtain and the ccd image sensor relative with source of parallel light; Column is provided with the grating chi that obtains the optical measuring head axial displacement; Worktable comprises panoramic table, the angular displacement adjustment platform that is provided with from bottom to top; Angular displacement adjustment platform comprises first and second the perpendicular angular displacement platform of light curtain that is used to regulate axis of workpiece and optical measuring head; The top of angular displacement adjustment platform is provided with part and places the plane; The first angular displacement platform comprises first pedestal that is fixedly connected with panoramic table, rotate the first beat platform that is assemblied on first pedestal, be arranged at being used between first pedestal and the first beat platform drives first rotating drive mechanism that the first beat platform rotates around corresponding beat axis, and the second angular displacement platform comprises second pedestal that is fixedly connected with the first beat platform, rotate the second beat platform that is assemblied on second pedestal, be arranged at being used between second pedestal and the second beat platform drives second rotating drive mechanism that the second beat platform rotates around corresponding beat axis, when first and second beat platform rotates around the beat axis vertically mutual and all belong to plane parallel with the light curtain of optical measuring head.
Said first and second rotating drive mechanism is worm-and-wheel gear; First pedestal is slidingly matched with a pair of camber line dovetail guide and the camber line dovetail groove guiding of extending along arc direction of the first beat platform through corresponding setting between the two; Second pedestal is slidingly matched with a pair of camber line dovetail guide and the camber line dovetail groove guiding of extending along arc direction of the second beat platform through corresponding setting between the two; Above-mentioned corresponding camber line dovetail guide and the guiding sliding trace of camber line dovetail groove be respectively the axis with the worm gear in the corresponding worm-and-wheel gear be the center of circle circular arc line so that the pivot center of the worm gear of each angular displacement platform be each beat platform when rotating around the beat axis; When first and second beat platform rotates around the beat axis all intersect at the O point with the pivot center of panoramic table, the O point drops on simultaneously on part placement plane.
Said angular displacement platform top is provided with the parallels of support part, and it is the end face of parallels that said part is placed the plane.
Angular displacement adjustment platform in the measuring instrument of the utility model; Adopt rotating drive mechanism to drive two angular displacement platforms belong to parallel plane beat axis (X, Y direction) around the light curtain with source of parallel light beat respectively; Realize the quadrature coupling adjusting of worktable deflection angle; Can accurately catch the spatial pose of workpiece; Assurance is to the accurate location and the measurement of part, adopts the adjustment mode of the worktable of this angular displacement adjustment platform to have significant advantage when adopting contactless optical curtain surveying instrument and revolution type tested part transverse plane not to have the verticality requirement with axis of rotation.It need not can realize ajusting of tested part by other high precision inspection device, and easy to adjust, and speed is fast.
Description of drawings:
Fig. 1 is the structural representation of the spherical roller that detected when using of the utility model measuring instrument embodiment;
Fig. 2 is the structural representation of embodiment of the measuring instrument of the utility model;
Fig. 3 is the structural representation of panoramic table and the angular displacement adjustment platform among Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is a synoptic diagram of in the principle of work of the utility model measuring instrument embodiment the detection part error being done processing and amplifying;
Fig. 6 is the fundamental diagram of the utility model measuring instrument embodiment;
Fig. 7 is the synoptic diagram after Fig. 6 regulates completion.
Embodiment:
The embodiment of the measuring instrument of the utility model such as Fig. 2-shown in Figure 4; Comprise base 1 and be fixed on the column 5 on the base 1; The vertical guiding in column 5 upper edges moves and is equipped with optical measuring head 3; Column 5 tops are equipped with and drive optical measuring head 3 along the motorized precision translation stage 4 that vertically moves back and forth, and are provided with in optical measuring head 3 below correspondences on the base 1 to be used to place and the worktable of rotating part.Worktable comprises panoramic table 6, the angular displacement adjustment platform 2 that is provided with from bottom to top; The turntable at panoramic table 6 tops is around the axis revolution of its vertical rotating shaft 61; Accurate B level bearing supporting is adopted in rotating shaft 61; And cooperate the detent mechanism 7 that forms by 90 ° of calibration with corresponding location pit through spring jack-up steel ball, and on base 1, also being provided with the grating chi of the vertical displacement of measuring optical measuring head 3 in addition, optical measuring head 3 adopts conventional led light source and telecentric lens formation source of parallel light; The light that source of parallel light is launched forms the light curtain that part is scanned, and the setting HL-CCD relative with light source.Panoramic table, optical measuring head and grating chi all belong to prior art, the main improvement of the utility model is the angular displacement adjustment platform 2 on the panoramic table 6.As shown in Figure 3, angular displacement adjustment platform 2 comprises first, second angular displacement platform 21,22.Each angular displacement platform includes the driving mechanism of worm and gear auxiliary structure and the beat platform that is connected with worm gear; The first angular displacement platform 21 comprises first pedestal 211 that is fixedly connected with panoramic table 6 through bolt; First pedestal, 211 middle parts are rotatably equipped with first worm screw 212 that axial along continuous straight runs extends through bearing; Be integrally formed with the camber line dovetail guide of the guide direction of the both sides that are distributed in first worm screw 212 on first pedestal 211 along the arc direction extension; The first beat platform 213 moves through the camber line dovetail groove guiding that is slidingly matched with camber line dovetail guide guiding and is assemblied in down on first pedestal 211; The bottom of the first beat platform 213 is provided with first worm gear 214 that cooperates with said first worm screw, 212 engaged transmission; The second angular displacement platform 22 comprises second pedestal 221 that is fixedly connected with the first beat platform 213 through bolt; Second pedestal, 221 middle parts are rotatably equipped with second worm screw 222 that axial along continuous straight runs extends through bearing; Be integrally formed with the camber line dovetail guide of the guide direction of the both sides that are distributed in second worm screw 222 on second pedestal 221 along the arc direction extension; The second beat platform 223 moves through the camber line dovetail groove guiding that is slidingly matched with camber line dovetail guide guiding and is assemblied in down on second pedestal 221; The bottom of the second beat platform 223 is provided with second worm gear 224 that cooperates with said second worm screw, 222 engaged transmission; Above-mentioned corresponding camber line dovetail guide and the guiding sliding trace of camber line dovetail groove are respectively that the axis with the worm gear in the corresponding worm-and-wheel gear is the circular arc line in the center of circle; Make the rotation action of beat platform to regulate, thereby the pivot center of the worm gear of each angular displacement platform is each beat platform beat axis when rotating, because first and second worm gear all has only the sub-fraction of whole worm gear circumference bottom by rotary worm; Therefore the axis (being the beat axis of beat platform) of each worm gear all is in and is higher than each beat platform top; Therefore the cooperation of each component height size on the matching Design of the diameter through first and second worm gear and the angular displacement platform can be arranged to the pivot center of first and second worm gear to intersect and vertical, in the present embodiment; The beat axis of first and second beat platform 213,223 (being the axis of first and second worm gear) intersect vertically and all with the light curtain of optical measuring head place plane parallel, and the pivot center of the beat axis of first and second beat platform 213,223 and panoramic table 6 is crossing.The worm and gear driving mechanism adopts the manual knob on each worm screw to rotate and regulates the worm screw realization; The adjustable angular range of each angular displacement platform is: ± 10 °/15 °; The minimum adjustment amount of angle is 3 ", can carry out the quadrature twin shaft after two angular displacement platform combinations and rotate adjustment with one heart; The top of angular displacement adjustment platform is provided with parallels 8; Parallels 8 has part and places the plane as the brace table of tested part 9; The height of parallels 22 is selected by the beat centre-height and the tested part altitude range of the integral body of angular displacement platform 2; In the present embodiment, parallels 22 can be thought one of assembly of angular displacement platform 2.Certainly in other embodiment of the utility model, also can be on the second beat platform on the angular displacement adjustment platform direct one or fixedly install part and place the plane.
And like Fig. 6, shown in Figure 7; Present embodiment is higher than the design of each beat platform through the actual axis of above-mentioned worm gear; The intersection point O of the beat axis of first and second beat platform 213,223 (also be simultaneously and intersection point that the panoramic table pivot center intersects) is dropped in part and places on the plane at place, plane; The effect of doing like this is to make the part axis of rotation to overlap with table axis in angular displacement platform adjustment back, thereby makes the Z axle of part coordinate have only one, thus the calculating of being convenient to measure.Certainly in other embodiment of utility model; When the axis of rotation that does not need part overlaps with the pivot center of worktable is strict; Also can through increase to the different Z axle (part axis of rotation direction) of part when the revolution Y realize measuring to (part radially) coordinate corrected Calculation, and that the beat axis of first and second beat platform among these embodiment only needs is vertical, and do not need to intersect each other and with the intersecting and drop on part and place on the plane of axis of rotation; Also can adopt other routine rotation governor motion to carry out the adjusting of beat platform among these embodiment; As adopt cam mechanism, linkage assembly, slide block mechanism etc.
The measuring method that the above-mentioned measuring instrument of the employing of the utility model is implemented, tested part is a kind of spherical roller that is applied in the bearing shown in Figure 1, this part is to turn round the solid of revolution that forms with cross section shown in Figure 1 around the axis of rotation of vertical extension; This spherical roller is axially for having the waist drum type of convexity; Its profile both sides transversal is a circular arc, and top end face is one to have the larger-diameter heading face of cutting, and the ball summit is the space imaginary point; The spherical crown gauge is less; Be merely tens um to um up to a hundred, the lower end is a plane, with the no verticality requirement of roller axis (axis of rotation).According to the structure and the size Control condition of roller, its parameter that requires to detect is had: the maximum gauge of L---roller outline in the prior art; R---roller side arc radius; The tip circle radius of SR---roller; H---maximum gauge horizontal coordinate is cut the domed end distance to the spherical roller top.
Measuring method may further comprise the steps; The schematic diagram that it is ajusted such as Fig. 5, Fig. 6, shown in Figure 7; 10 is the pivot center of panoramic table 6 among the figure; 11 is that the axis of rotation, 12 of revolving parts is placed the plane for the plane, place of optical measuring head light curtain, 13 is part, is conveniently to understand, and in Fig. 5-Fig. 7, the error of perpendicularity between the plane of the spherical roller small end of this part axis of rotation and its lower end is amplified.
1) usage level appearance conjunction measuring appearance is regulated first, second beat platform, the part of measuring instrument is placed the plane be adjusted into the light curtain place plane parallel with optical measuring head, is surface level,
2) plane of revolving parts (spherical roller) with small end is placed on the part placement plane of measuring instrument;
3) the beat axis of first, second beat platform and the common intersection of panoramic table pivot center are defined as the O point; On the placement plane, moving part feels relieved to the centre of form and the O point of part bottom end face; As shown in Figure 6; Make the pivot center of part axis of rotation and panoramic table 6 intersect at the O point, the radial dimension that at this moment records part by optical measuring head is D, through rotating panoramic table 6; Make the beat axis of the first beat platform parallel with the directional light ejaculation direction of optical measuring head; On one side measure part perpendicular to the radial dimension on its axis of rotation direction with optical measuring head, first beat platform carried out beat regulate on one side, radially stop to regulate during minimum dimension D ' and realize part axis of rotation ajusting until the part of measuring with optical measuring head at the first beat platform; 90 ° rotate back to turntable 6 then; Make the beat axis of the second beat platform parallel with the directional light ejaculation direction of optical measuring head; Measure part perpendicular to the radial dimension on its axis of rotation direction with optical measuring head on one side; On one side the second beat platform is carried out beat and regulate, radially stop to regulate during minimum dimension and realize part axis of rotation ajusting at the second beat platform until the part of measuring with optical measuring head;
4) drive optical measuring head and move up and down, realize revolving parts (spherical roller) flat swept measurement, obtain the radial dimension of each scanning cross-section, and then obtain the maximum gauge L of tested revolving parts (spherical roller); Revolving parts (spherical roller) is obtained by the grating chi that is installed on the column with respect to the axial displacement of optical measuring head; Through handling to measuring raw data; The revolving parts (spherical roller) that calculates face ball summit, pommel is (Z to) coordinate axially, finally obtains the distance of maximum gauge to spherical end surface virtual ball summit.
Certainly; There are some other embodiments in the measuring instrument of the utility model of being introduced among the embodiment as above-mentioned measuring instrument; When using measuring instrument to measure, in the time of also can saving beginning part is placed the horizontal adjustment on plane and the centering set-up procedure that afterwards the part axis of rotation is overlapped with said O point.At this moment measuring method is:
(1) part is upright state with axis of rotation and is placed on angular displacement adjustment platform top;
(2) make the beat axis of the first beat platform parallel with the directional light ejaculation direction of optical measuring head; Measure part perpendicular to the radial dimension on its axis of rotation direction with optical measuring head on one side; On one side the first beat platform is carried out beat and regulate, hour stop to regulate and realize part axis of rotation ajusting at the first beat platform until the part radial dimension of measuring with optical measuring head; Make the beat axis of the second beat platform parallel with the directional light ejaculation direction of optical measuring head; Measure part perpendicular to the radial dimension on its axis of rotation direction with optical measuring head on one side; On one side the second beat platform is carried out beat and regulate, hour stop to regulate and realize part axis of rotation ajusting at the second beat platform until the part radial dimension of measuring with optical measuring head;
(3) drive optical measuring head and vertically move, part is swept measurement, obtain the cross-section radial size of differing heights.
Claims (3)
1. the measuring instrument of a revolving parts; Comprise base and be fixed on the column on the base; The vertical guiding in column upper edge moves and is equipped with optical measuring head; Corresponding being provided with is used to place the also worktable of rotating part in the optical measuring head below on the base; Optical measuring head comprises the source of parallel light of formation light curtain and the ccd image sensor relative with source of parallel light; Column is provided with the grating chi that obtains the optical measuring head axial displacement; It is characterized in that; Worktable comprises panoramic table, the angular displacement adjustment platform that is provided with from bottom to top; Angular displacement adjustment platform comprises first and second the perpendicular angular displacement platform of light curtain that is used to regulate axis of workpiece and optical measuring head, and the top of angular displacement adjustment platform is provided with part and places the plane, and the first angular displacement platform comprises that first pedestal, the rotation that are fixedly connected with panoramic table are assemblied in the first beat platform on first pedestal, are arranged at being used between first pedestal and the first beat platform and drive first rotating drive mechanism of the first beat platform around corresponding beat axis rotation; The second angular displacement platform comprises second pedestal that is fixedly connected with the first beat platform, rotate the second beat platform that is assemblied on second pedestal, be arranged at being used between second pedestal and the second beat platform drives second rotating drive mechanism that the second beat platform rotates around corresponding beat axis, when first and second beat platform rotates around the beat axis vertical each other and all belong to plane parallel with the light curtain of optical measuring head.
2. measuring instrument according to claim 1; It is characterized in that: said first and second rotating drive mechanism is worm-and-wheel gear; First pedestal is slidingly matched with a pair of camber line dovetail guide and the camber line dovetail groove guiding of extending along arc direction of the first beat platform through corresponding setting between the two; Second pedestal is slidingly matched with a pair of camber line dovetail guide and the camber line dovetail groove guiding of extending along arc direction of the second beat platform through corresponding setting between the two; Above-mentioned corresponding camber line dovetail guide and the guiding sliding trace of camber line dovetail groove be respectively the axis with the worm gear in the corresponding worm-and-wheel gear be the center of circle circular arc line so that the pivot center of the worm gear of each angular displacement platform be each beat platform when rotating around the beat axis; When first and second beat platform rotates around the beat axis all intersect at the O point with the pivot center of panoramic table, the O point drops on simultaneously on part placement plane.
3. measuring instrument according to claim 1 and 2 is characterized in that: said angular displacement platform top is provided with the parallels of support part, and it is the end face of parallels that said part is placed the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376982U CN202471019U (en) | 2011-12-20 | 2011-12-20 | Measuring instrument for revolving body part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376982U CN202471019U (en) | 2011-12-20 | 2011-12-20 | Measuring instrument for revolving body part |
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| Publication Number | Publication Date |
|---|---|
| CN202471019U true CN202471019U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205376982U Expired - Fee Related CN202471019U (en) | 2011-12-20 | 2011-12-20 | Measuring instrument for revolving body part |
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| CN (1) | CN202471019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679904A (en) * | 2011-12-20 | 2012-09-19 | 河南科技大学 | Measurement method and measurement instrument of revolution body part |
| CN104990631A (en) * | 2015-06-24 | 2015-10-21 | 中国科学院光电研究院 | Laser interferometer adjusting seat |
| CN113970299A (en) * | 2021-10-14 | 2022-01-25 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device for vertically measuring outline of elongated piece with high precision |
-
2011
- 2011-12-20 CN CN2011205376982U patent/CN202471019U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679904A (en) * | 2011-12-20 | 2012-09-19 | 河南科技大学 | Measurement method and measurement instrument of revolution body part |
| CN102679904B (en) * | 2011-12-20 | 2014-11-05 | 河南科技大学 | Measurement method and measurement instrument of revolution body part |
| CN104990631A (en) * | 2015-06-24 | 2015-10-21 | 中国科学院光电研究院 | Laser interferometer adjusting seat |
| CN104990631B (en) * | 2015-06-24 | 2018-09-14 | 中国科学院光电研究院 | A kind of laser interferometer adjusting seat |
| CN113970299A (en) * | 2021-10-14 | 2022-01-25 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device for vertically measuring outline of elongated piece with high precision |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20141220 |
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| EXPY | Termination of patent right or utility model |