CN201463841U - Six-point locating straight-line motion mechanism of square gauging spindle of length measuring instrument - Google Patents
Six-point locating straight-line motion mechanism of square gauging spindle of length measuring instrument Download PDFInfo
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- CN201463841U CN201463841U CN2009201253524U CN200920125352U CN201463841U CN 201463841 U CN201463841 U CN 201463841U CN 2009201253524 U CN2009201253524 U CN 2009201253524U CN 200920125352 U CN200920125352 U CN 200920125352U CN 201463841 U CN201463841 U CN 201463841U
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- square
- measurement axis
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- bearing
- gauging spindle
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Abstract
The utility model discloses a six-point locating straight-line motion mechanism of a square gauging spindle of a length measuring instrument, which belongs to the square gauging spindle of a length measuring instrument, wherein the square gauging spindle (2) of the mechanism adopts a rectangular cross section, the motion direction thereof is vertical to the rectangular cross section, the bottom surface of the square gauging spindle vertical to the rectangular cross section is located by a bottom locating bearing group (3) consisting of four bearings; the back side surface of the gauging spindle vertical to the rectangular cross section is located by two back side surface locating bearing groups (8); three pressure bearing groups (4) with a pressure spring (1) on the front side surface of the square gauging spindle and two upper pressure bearing groups (9) with a pressure spring (7) on the top surface of the square gauging spindle exert confining force on the square gauging spindle, and therefore parts of the interior of the square gauging spindle are hollowed out to contain a grating ruler and a reading head. The utility model has the advantages of excellent structure design, compactness, good rigidity, flexible movement, and no gap, and therefore the motion accuracy is high, and the utility model is particularly suitable for high-accuracy length measuring instruments.
Description
Technical field: the utility model relates to the mechanism of length-measuring instrument, six point location straight-line motion mechanisms of the square measurement axis of particularly a kind of horizontal metroscope.
Background technology: horizontal metroscope is a specified standard optical metrological instrument among the national standard JB/T10574-2006 " optical length gauging instrument basic parameter ", measures axis according to it and is level or vertical, is divided into two kinds of forms of horizontal length measuring machine and vertical comparator.Measurement axis and precise rolling bearing group are that these two kinds of horizontal metroscopes are realized measuring straight-line precise part, and the two has constituted the measurement axis straight-line motion mechanism, and the measurement axis of traditional horizontal metroscope is cylindrical.The present age, horizontal metroscope was realized digital displayization, and for measurement axis inside holds the needs of optical grating measuring system, the xsect of measurement axis is designed to the rectangle of hollow.The precision of rectilinear motion of measurement axis directly affects the accuracy of measurement of horizontal metroscope; And straight-line precision is except that the workmanship that depends on bearing pack and measurement axis, also with bearing pack in each position of bearings topological design be closely related.
Summary of the invention: the purpose of this utility model is to provide six point location straight-line motion mechanisms of the square measurement axis of a kind of horizontal metroscope, and it is a kind of horizontal metroscope, measurement axis Precision Linear Moving mechanism that structure is good of being applied to.
Formation of the present utility model: the bearing pack that compresses by square measurement axis, the bearing pack that plays measurement axis space of lines location and the effect of measurement axis motion guide and a sealing process band spring is formed, the measurement axis of the center line by touching the square measurement axis 2 of surveying end 6, the xsect of measurement axis is a rectangle, its direction of motion is perpendicular to this square-section, four faces vertical with the square-section are spigot surfaces of square measurement axis motion, wherein, the bottom surface is by bottom surface alignment bearing group 3 location; Trailing flank has so just been determined the locus of square measurement axis by trailing flank alignment bearing group 8 location; And on the leading flank band pressure spring 1 before compress on bearing pack 4 and the end face band pressure spring 7 on compress bearing pack 9, the space orientation of square shaped measurement axis applies confining force, but does not influence the flexible motion of measurement axis along axis direction.
The alignment bearing group location, bottom surface that the square measurement axis bottom surface vertical with the square-section is made up of four bearings; The trailing flank alignment bearing group location that the square measurement axis trailing flank vertical with the square-section is made up of two bearings; On the square measurement axis leading flank by the bearing of three band pressure springs forms before compress bearing pack, square measurement axis end face by two bearings of being with pressure springs form on compress bearing pack, the square shaped measurement axis applies confining force.
Compare with existing conventional art, the xsect of the utility model measurement axis is a rectangle, and the inner part of measurement axis is emptied, and can hold the grating chi and pick up the read head of grating signal.Owing to empty four angles that kept the square-section, therefore the rigidity of square shaped measurement axis can not produce tangible weakening, precision horizontal surface grinding machine can guarantee that four spigot surfaces of square measurement axis have high machining precision, thereby square measurement axis is assembled on the horizontal metroscope, can reaches high kinematic accuracy.
Because the design attitude of each bearing in the bearing pack and the positioning function division of labor are clear and definite, distribution range spreads out under maximum enabled condition as far as possible, and it is accurate that the bearing number is set, measurement axis there is not superfluous constraint, therefore this mechanism design is good, can guarantee that measurement axis space of lines positioning stablity is reliable, measurement axis movement sensitive, no gap, motion geometric accuracy height when measuring.
Description of drawings: Fig. 1 is the utility model structural representation, and Fig. 2 is a coordinate diagram.
1. pressure springs among the figure, 2. square measurement axis, 3. alignment bearing group in bottom surface 4. before compresses bearing pack, and 5. shell 6. touches and surveys end, 7. pressure spring, 8. trailing flank alignment bearing group compresses bearing pack on 9..
Embodiment: as shown in Figure 1 and Figure 2, the measurement axis 2 of horizontal metroscope is the square measurement axis of a square-section, and its direction of motion is perpendicular to this square-section.According to the length and the bottom surface alignment bearing group 3 of the measurement range of square measurement axis design measurement axis, the span of trailing flank alignment bearing group 8; Design the part of square measurement axis inside according to the physical dimension of grating chi and read head and empty size.
The bottom surface of square measurement axis is by bottom surface alignment bearing group 3 location, compresses bearing pack 9 on the measurement axis end face, under the effect of the elastic force of pressure spring 7, the bottom surface of measurement axis closely contacted with bottom surface alignment bearing group 3.Its function is: the degree of freedom that retrains square measurement axis Z-direction motion and rotate around X, Y coordinate.Bottom surface alignment bearing group 3 is made up of the bearing of four rectangular distribution, and the contact point of they and square measurement axis must be corrected in same plane.
Trailing flank alignment bearing group 8 location that the trailing flank of square measurement axis is made up of two bearings, compress bearing pack 4 before on the square measurement axis leading flank, under the effect of the elastic force of pressure spring 1, the trailing flank of square measurement axis is closely contacted with trailing flank alignment bearing group 8, and its function is: retrain square measurement axis along the Y coordinate motion and the degree of freedom of rotating around the Z coordinate.
In the six-freedom degree of square measurement axis spatial movement, existing five restrained, remaining degree of freedom along the X coordinate motion is used for realizing measuring rectilinear motion.If it is zero that six precise rolling bearings of bottom surface alignment bearing group 3 and trailing flank alignment bearing group 8 do not have the flatness error of diameter run-out, square measurement axis motion guide face, square measurement axis is made pure rectilinear motion in theory.
The stage casing of square measurement axis 2 and all bearings and spring are inclusive in the shell 5, have only the two end portions of square measurement axis and touch survey end 6 to overhang outside shell.
Claims (2)
1. six point location straight-line motion mechanisms of the square measurement axis of horizontal metroscope, the bearing pack that compresses by square measurement axis, the bearing pack that plays measurement axis space of lines location and the effect of measurement axis motion guide and a sealing process band spring is formed, it is characterized in that: be the measurement axis by the center line that touches the square measurement axis (2) of surveying end (6), the xsect of square measurement axis is a rectangle, its direction of motion is perpendicular to this square-section, four faces vertical with the square-section are spigot surfaces of square measurement axis motion, wherein, the bottom surface is located by bottom surface alignment bearing group (3); Trailing flank has so just been determined the locus of square measurement axis by trailing flank alignment bearing group (8) location; And on the leading flank with compressing before the pressure spring (1) on bearing pack (4) and the end face with compressing bearing pack (9) on the pressure spring (7), the space orientation of square shaped measurement axis (2) applies confining force, inner local being emptied of square measurement axis (2) held grating chi and read head.
2. six point location straight-line motion mechanisms of the square measurement axis of horizontal metroscope according to claim 1 is characterized in that: bottom surface alignment bearing group (3) location that the square measurement axis bottom surface vertical with the square-section is made up of four bearings; Trailing flank alignment bearing group (8) location that the square measurement axis trailing flank vertical with the square-section is made up of two bearings; Compress before having on the square measurement axis leading flank that the bearing of three band pressure springs (1) forms bearing pack (4), square measurement axis end face by the bearing of two band pressure springs (7) form on compress bearing pack (9), the square shaped measurement axis applies confining force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201253524U CN201463841U (en) | 2009-04-16 | 2009-04-16 | Six-point locating straight-line motion mechanism of square gauging spindle of length measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201253524U CN201463841U (en) | 2009-04-16 | 2009-04-16 | Six-point locating straight-line motion mechanism of square gauging spindle of length measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463841U true CN201463841U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201253524U Expired - Lifetime CN201463841U (en) | 2009-04-16 | 2009-04-16 | Six-point locating straight-line motion mechanism of square gauging spindle of length measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN201463841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343915A (en) * | 2014-10-17 | 2015-02-11 | 贵阳新天光电科技有限公司 | Secondary friction transmission openable super-micromotion mechanism for square gauging spindle of universal length measuring gauge |
| CN104713484A (en) * | 2015-03-09 | 2015-06-17 | 北京奥特普森精密机械有限公司 | Closed type optical grating linear displacement sensor structure for ultra-precise machine tool |
-
2009
- 2009-04-16 CN CN2009201253524U patent/CN201463841U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343915A (en) * | 2014-10-17 | 2015-02-11 | 贵阳新天光电科技有限公司 | Secondary friction transmission openable super-micromotion mechanism for square gauging spindle of universal length measuring gauge |
| CN104713484A (en) * | 2015-03-09 | 2015-06-17 | 北京奥特普森精密机械有限公司 | Closed type optical grating linear displacement sensor structure for ultra-precise machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |