CA1116843A - Precision measuring device for cylindrical objects - Google Patents
Precision measuring device for cylindrical objectsInfo
- Publication number
- CA1116843A CA1116843A CA000323444A CA323444A CA1116843A CA 1116843 A CA1116843 A CA 1116843A CA 000323444 A CA000323444 A CA 000323444A CA 323444 A CA323444 A CA 323444A CA 1116843 A CA1116843 A CA 1116843A
- Authority
- CA
- Canada
- Prior art keywords
- roller
- rolling
- follower
- measuring
- swiveling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Pens And Brushes (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Telephone Function (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Abstract of the Disclosure A measuring device especially for rollers for paper mills is provided with a digital display and a printer, the device being height adjustable on a stand fixable on the carriage of a lathe or grinding machine for machining the rollers. The device is provided with a measuring frame movable in a plane transverse to the longitudinal axis of the roller and is furnished with a first spring-loaded follower which is associated with an electronic measuring instrument, a second follower disposed diametrically opposite the first follower and a third follower disposed above the highest point of the roller. Each of the three followers includes a rotatable castor wheel. The frame is slidable in a slide and pivotable about a horizontal axis so that the frame follows accurately the outer surface of the roller even when the latter is rotating, e.g. during machining.
Description
'I'he invention relates to a precision measuring device for cylindrical objects, especially large rollers, e.g. rollers for a paper mill, the device functioning electronically and being provided with a digital display and a printer. The device is fixable on the movable carriage of a lathe or grinding machine for machining the roller, and the device is provided with a measuring frame movable in the plane at right angles to the longitudinal axis of the roller to be measured.
The basic idea of the invention is that the mea-suring device does not move exactly in a straight line with the carriage but follows the outer surface of the roller to be measured.
Until now, the measurement of the diameters of large rollers has been done mainly by means of so-called riders and mechanical micrometers the results of which have ~ not been accurate enough. Efforts have been made to utilize electronic measuring instruments in association with riders but the result has been unsatisfactory because the high accuracy of micrometers has not been realized due to the inaccurate construction of the arrangement and its depen-dence on human factors. Further, it has not been possible to measure the roller up to its end edge. In the paper mill industry, the quality of the paper when using high speed machines has suffered due to mis-shapen and inaccurate rollers.
- The aim of this invention is to provide a highly exact and stable roller measurement device for use with lathes or grinders.
B.
~ measuriny device, according to the invention, for measuring cylindrical objects, particularly large rollers for paper mills, is made up as follows. The device operates electronically and is provided with a digital display and a printer. The device is fixable on the carriage of a lathe or grinding machine for machining the roller. It has a measuring frame movable in the plane at right angles to the longitudinal axis to be measured. The measuring frame carries followers with respective rolling and swiveling mernbers for engaging the outer periphery of the roller. The first follower i~ disposed at one ~ide of the roller and is spring-loaded towards the roller and linked to the electronic mea-suring means. The second follower is adjustably secured on the diametrically opposite side of the roller from the first follower. The third follower is disposed above the highest point of the roller so that the weight of the measuring frame bears against the roller through the third follower. The weight of the measuring frame bearing on the roller is reduced by an adjustable counter-balance. The measuring frame is laterally slidable on ball or roller bearing mountings and is also pivotable about a substantially longitudinal axis so that the rolling members can accurately follow the outer periphery of the roller as the latter rotates during machining of the roller.
According to a preferred construction, the measuring frame is secured, by means of a fastening bar and a wheel screw, to one end of the slide arm. The other end of the slide arm is slidable with respect to a quadrangular slide support which is pivoted about the substantially longitudinal axis to a supporting part. The slide support has an extension with the counter-balance slidable on it. The supporting part is verti-cally movable upon, and supported by, a supporting pillar.
-la-B
~1~tj843 ~ he rolling and swiv(ling members may be rotatably supported by ball bearings on support parts which carry rods ~; which are rotatably mounted by bearings with respect to the remainder of the followers. The rotational axi~ of each rolling and swiveling member is eccentric, with respect to the rod axis, so that the rolling and swiveling members can swivel to take up the right direction. Additionally, the rolling members are provided with thin scrapers which keep the rolling members clean.
; 10In another preferred construction, the outer sur-face of each rolling and swiveling member is part spherical except for a central part which engages the roller and which is cylindrical. The end of the support part forms a bearing fork into which an axial of the rolling member is fitted and the end of the support part is part spherical in shape and compliments the part-spherical shape of the rolling member.
The support part is balanced with respect to the longitudinal axis of the rod by means of a counter-balance weight.
B -lb-11~6843 The invention will now be further described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows the preferred embodiment of measuring device in side view;
Figure 2 is a sectional view of a follower of the device; and Figure 3 shows the follower turned through 90 with respect to Figure 2, the lower part of the figure being in cross-section.
The device comprises a measuring frame 1 carrying three rolling and swiveling members 2 respectively forming part of three followers, namely a first follower 4 which is attached to an electronic measuring instrument 3 and which is spring loaded to urge the corresponding member 2 against the roller 5 (shown in Figure 1 by a dotted line), a second ~; follower 6 which is disposed diametrically opposite the follower 4 and which is fixed to a horizontally adjustable - 20 rod, and a third follower 7 which is disposed above the highest point of the roller 5 and which is fixed to a rod adjustable in the vertical direction. The weight of the measuring frame 1 is transferred to the roller 5 through the follower 7. The followers 6 and 7 are provided with notches and locking screws (not visible). The three rolling members
The basic idea of the invention is that the mea-suring device does not move exactly in a straight line with the carriage but follows the outer surface of the roller to be measured.
Until now, the measurement of the diameters of large rollers has been done mainly by means of so-called riders and mechanical micrometers the results of which have ~ not been accurate enough. Efforts have been made to utilize electronic measuring instruments in association with riders but the result has been unsatisfactory because the high accuracy of micrometers has not been realized due to the inaccurate construction of the arrangement and its depen-dence on human factors. Further, it has not been possible to measure the roller up to its end edge. In the paper mill industry, the quality of the paper when using high speed machines has suffered due to mis-shapen and inaccurate rollers.
- The aim of this invention is to provide a highly exact and stable roller measurement device for use with lathes or grinders.
B.
~ measuriny device, according to the invention, for measuring cylindrical objects, particularly large rollers for paper mills, is made up as follows. The device operates electronically and is provided with a digital display and a printer. The device is fixable on the carriage of a lathe or grinding machine for machining the roller. It has a measuring frame movable in the plane at right angles to the longitudinal axis to be measured. The measuring frame carries followers with respective rolling and swiveling mernbers for engaging the outer periphery of the roller. The first follower i~ disposed at one ~ide of the roller and is spring-loaded towards the roller and linked to the electronic mea-suring means. The second follower is adjustably secured on the diametrically opposite side of the roller from the first follower. The third follower is disposed above the highest point of the roller so that the weight of the measuring frame bears against the roller through the third follower. The weight of the measuring frame bearing on the roller is reduced by an adjustable counter-balance. The measuring frame is laterally slidable on ball or roller bearing mountings and is also pivotable about a substantially longitudinal axis so that the rolling members can accurately follow the outer periphery of the roller as the latter rotates during machining of the roller.
According to a preferred construction, the measuring frame is secured, by means of a fastening bar and a wheel screw, to one end of the slide arm. The other end of the slide arm is slidable with respect to a quadrangular slide support which is pivoted about the substantially longitudinal axis to a supporting part. The slide support has an extension with the counter-balance slidable on it. The supporting part is verti-cally movable upon, and supported by, a supporting pillar.
-la-B
~1~tj843 ~ he rolling and swiv(ling members may be rotatably supported by ball bearings on support parts which carry rods ~; which are rotatably mounted by bearings with respect to the remainder of the followers. The rotational axi~ of each rolling and swiveling member is eccentric, with respect to the rod axis, so that the rolling and swiveling members can swivel to take up the right direction. Additionally, the rolling members are provided with thin scrapers which keep the rolling members clean.
; 10In another preferred construction, the outer sur-face of each rolling and swiveling member is part spherical except for a central part which engages the roller and which is cylindrical. The end of the support part forms a bearing fork into which an axial of the rolling member is fitted and the end of the support part is part spherical in shape and compliments the part-spherical shape of the rolling member.
The support part is balanced with respect to the longitudinal axis of the rod by means of a counter-balance weight.
B -lb-11~6843 The invention will now be further described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows the preferred embodiment of measuring device in side view;
Figure 2 is a sectional view of a follower of the device; and Figure 3 shows the follower turned through 90 with respect to Figure 2, the lower part of the figure being in cross-section.
The device comprises a measuring frame 1 carrying three rolling and swiveling members 2 respectively forming part of three followers, namely a first follower 4 which is attached to an electronic measuring instrument 3 and which is spring loaded to urge the corresponding member 2 against the roller 5 (shown in Figure 1 by a dotted line), a second ~; follower 6 which is disposed diametrically opposite the follower 4 and which is fixed to a horizontally adjustable - 20 rod, and a third follower 7 which is disposed above the highest point of the roller 5 and which is fixed to a rod adjustable in the vertical direction. The weight of the measuring frame 1 is transferred to the roller 5 through the follower 7. The followers 6 and 7 are provided with notches and locking screws (not visible). The three rolling members
2 engage the outer periphery of the roller 5 and are mounted by means of ball bearings on respective support parts 8 which carry rods 35 (Figure 2) rotatably mounted by ball bearings - on the remaining portions of the followers 4, 6, 7. Thus the members 2 can swivel so that they always (like the castors of a grand piano) take up the right position with respect to the direction of rotation of the roller 5.
s~ - 2 -The measuring frame 1 is of box-like construction and in order to damp vibrations it is filled with styrox grains which have been swollen under the influence of vapour.
The measuring frame 1 is furnished with a handle 9, and it is easy to replace the frame with a bigger or smaller one since it is fastened by a slide arm 10, by a fastening bar 11 and a wheel screw or clamp 12. The slide arm 10 is also box-like in construction and the right-hand end as viewed in Figure 1 is easily slidable, on ball or roller bearings, in a square-section hard sintered and finely ground steel slide tube 13.
The slide tube 13 is pivotally mounted, with the aid of ball bearings, on a supporting part 14, this pivot axis being de-fined by a horizontal pin 15. On an extension arm 16 fixed with two bolts to the slide tube 13 is fitted a slidable counterbalance weight 17, as shown in Figure 1. Thus, the measuring frame 1, the slide arm 10, the slide tube 13, the arm 16, and the counterbalance 17, are together revolvable around the pin 15, and furthermore the measuring frame 1 and the slide arm 10 are slidable along the slide tube 13, so :~ 20 that the measuring frame 1 with the instrument 3 moves with minimum friction in the plane perpendicular to the pin 15 and the longitudinal axis of the roller 5.
The supporting part 14 is adjustably secured on a supporting pillar 18 so that the supporting part 14, having a cylindrical opening corresponding to the diameter of the supporting pillar 18, can be lifted or lowered to the desired level by means of a screw spindle 19 and a rod 20 and locked to the supporting pillar 18 with a set screw 21 (the wheel or bar of which is hidden behind the arm 16 in Figure 1). The supporting pillar 18 is supported on a stand 22 and the height of the pillar 18 with respect to the stand can be adjusted and pillar 18 locked in position by means of ,.
a screw and an arm 23. The stand 22 can be fixed with bolts to the carriage of a grinding machine or lathe for machining the rollers. The movement of the measuring frame 1 and the slide arm 10 with respect to the slide tube 13 can be limited by means of a limiter 24 which is movable along a rod one end of which is fixed to the slide carriage of the slide arm 10 the other end of which is fixed to the slide tube 13. The device thus traverses along the length of the roller 5 to measure the latter.
The electronic measuring instrument 3 associated with the follower 4 transmits measurements continuously through a lead 25 which passes inside the measuring frame 1 to a display box 26 which can be placed anywhere convenient but in this case is fixed by means of a supporting arm 27 to the upper part of the supporting pillar 18. The display box 26 also has an indicating light 30 which glows when electri-cal power is switched on. The display box 26 is provided with a seven-segment digital display with 16 mm high digits and with a printer printing the sensed measurements on a paper strip 29. The print-out regularity is adjustable between 3 per second and 1 per 2 minutes. The measuring range of the diameter of the roller 5 is between 30 mm and 1500 mm to an accuracy of 0.01 mm to 0.002 mm. Hence, the device measures : the diameter of the roller 5 and also indicates any eccentri-city or displacement of the roller axis.
A11 the followers 4, 6 and 7 are similar and they can be furnished with either cylindrical or spherical rolling members 2. Figure 2 shows in detail the construction of the follower 6. The rolling member 2 has a part-spherical outer periphery and is mounted on an axle pin 31 by means of twin ball bearings 32 between which there is an intermediate ring 33 in order to eliminate longitudinal motion of the bearing - 4 _ ~1~6S~43 races 34. The axle pin 31 is perpendicular to the longitu-dinal axis ~f the rod 35 and is displaced a distance e there-from. The support part 8 forms a fork, part of which is part-spherical and complements the part-spherical shape of the rolling member 2. The rolling member 2 can therefore swivel to take up the correct position in engagement with the surface of the roller 5, even up to the end of the latter.
The eccentricity e can be 3 to 4 mm.
The rod 35 is rotatably mounted on the remainder of the follower 6 by twin ball bearings 36 the outer races of which are supported by a cylindrical sleeve 37 which is a firm push fit in the outer tube of the follower 6 and carries graduations (Figure 3) for rough positioning. The support part 8 is balanced with respect to the longitudinal axis of the rod 35 by means of a counterbalance weight 38 which can be lead and is let into a recess in the upper part of the support part 8. A scraper 39 made by thin (e.g. 0.02 mm) steel sheet is fixed to the support part 8 by a screw to keep the rolling member 2 clean.
The surface of the part-spherical member 2 is ground to form a narrow cylindrical zone 2a over which the member 2 contacts the roller 5. This increases the area of contact between the member 2 and the roller 5, which is of importance especially when measuring rollers 5 covered with soft layers (copper, rubber, etc.).
Figure 1 shows in dotted lines the outlines of the moving parts in two positions, the displacement being exaggerated since the movement is typically only hundredths of a millimetre.
With the measuring device according to the inven-tion the following advantages can be achieved:
i, - 5 -, .~, ~1~6843 (i) the results of -the measureMent are e~trennely accurate and ea~y to read, particularly from a paper strip which at the sarne time provides a perrnanent record, (ii) by means of the device it is possible to centre the roller: one measures with the electronic instru-ment 3 (when the horizontal movement of the measuring frame 1 is locked up) at both ends of the roller and centres the roller on the basis of the result of the measurement, (iii) since the device enables measurements to be made whilst the roller rotates, it is easy to correct a fault without delay, (iv) the members 2 do not bite into the roller 5 and the members 2 do not collect impurities, (v) it is possible to measure the roller 5 from - one end up to the other end, : (vi) the measuring frame 1 is easily and rapidly changeable for another of a different size.
, , _ ~, _
s~ - 2 -The measuring frame 1 is of box-like construction and in order to damp vibrations it is filled with styrox grains which have been swollen under the influence of vapour.
The measuring frame 1 is furnished with a handle 9, and it is easy to replace the frame with a bigger or smaller one since it is fastened by a slide arm 10, by a fastening bar 11 and a wheel screw or clamp 12. The slide arm 10 is also box-like in construction and the right-hand end as viewed in Figure 1 is easily slidable, on ball or roller bearings, in a square-section hard sintered and finely ground steel slide tube 13.
The slide tube 13 is pivotally mounted, with the aid of ball bearings, on a supporting part 14, this pivot axis being de-fined by a horizontal pin 15. On an extension arm 16 fixed with two bolts to the slide tube 13 is fitted a slidable counterbalance weight 17, as shown in Figure 1. Thus, the measuring frame 1, the slide arm 10, the slide tube 13, the arm 16, and the counterbalance 17, are together revolvable around the pin 15, and furthermore the measuring frame 1 and the slide arm 10 are slidable along the slide tube 13, so :~ 20 that the measuring frame 1 with the instrument 3 moves with minimum friction in the plane perpendicular to the pin 15 and the longitudinal axis of the roller 5.
The supporting part 14 is adjustably secured on a supporting pillar 18 so that the supporting part 14, having a cylindrical opening corresponding to the diameter of the supporting pillar 18, can be lifted or lowered to the desired level by means of a screw spindle 19 and a rod 20 and locked to the supporting pillar 18 with a set screw 21 (the wheel or bar of which is hidden behind the arm 16 in Figure 1). The supporting pillar 18 is supported on a stand 22 and the height of the pillar 18 with respect to the stand can be adjusted and pillar 18 locked in position by means of ,.
a screw and an arm 23. The stand 22 can be fixed with bolts to the carriage of a grinding machine or lathe for machining the rollers. The movement of the measuring frame 1 and the slide arm 10 with respect to the slide tube 13 can be limited by means of a limiter 24 which is movable along a rod one end of which is fixed to the slide carriage of the slide arm 10 the other end of which is fixed to the slide tube 13. The device thus traverses along the length of the roller 5 to measure the latter.
The electronic measuring instrument 3 associated with the follower 4 transmits measurements continuously through a lead 25 which passes inside the measuring frame 1 to a display box 26 which can be placed anywhere convenient but in this case is fixed by means of a supporting arm 27 to the upper part of the supporting pillar 18. The display box 26 also has an indicating light 30 which glows when electri-cal power is switched on. The display box 26 is provided with a seven-segment digital display with 16 mm high digits and with a printer printing the sensed measurements on a paper strip 29. The print-out regularity is adjustable between 3 per second and 1 per 2 minutes. The measuring range of the diameter of the roller 5 is between 30 mm and 1500 mm to an accuracy of 0.01 mm to 0.002 mm. Hence, the device measures : the diameter of the roller 5 and also indicates any eccentri-city or displacement of the roller axis.
A11 the followers 4, 6 and 7 are similar and they can be furnished with either cylindrical or spherical rolling members 2. Figure 2 shows in detail the construction of the follower 6. The rolling member 2 has a part-spherical outer periphery and is mounted on an axle pin 31 by means of twin ball bearings 32 between which there is an intermediate ring 33 in order to eliminate longitudinal motion of the bearing - 4 _ ~1~6S~43 races 34. The axle pin 31 is perpendicular to the longitu-dinal axis ~f the rod 35 and is displaced a distance e there-from. The support part 8 forms a fork, part of which is part-spherical and complements the part-spherical shape of the rolling member 2. The rolling member 2 can therefore swivel to take up the correct position in engagement with the surface of the roller 5, even up to the end of the latter.
The eccentricity e can be 3 to 4 mm.
The rod 35 is rotatably mounted on the remainder of the follower 6 by twin ball bearings 36 the outer races of which are supported by a cylindrical sleeve 37 which is a firm push fit in the outer tube of the follower 6 and carries graduations (Figure 3) for rough positioning. The support part 8 is balanced with respect to the longitudinal axis of the rod 35 by means of a counterbalance weight 38 which can be lead and is let into a recess in the upper part of the support part 8. A scraper 39 made by thin (e.g. 0.02 mm) steel sheet is fixed to the support part 8 by a screw to keep the rolling member 2 clean.
The surface of the part-spherical member 2 is ground to form a narrow cylindrical zone 2a over which the member 2 contacts the roller 5. This increases the area of contact between the member 2 and the roller 5, which is of importance especially when measuring rollers 5 covered with soft layers (copper, rubber, etc.).
Figure 1 shows in dotted lines the outlines of the moving parts in two positions, the displacement being exaggerated since the movement is typically only hundredths of a millimetre.
With the measuring device according to the inven-tion the following advantages can be achieved:
i, - 5 -, .~, ~1~6843 (i) the results of -the measureMent are e~trennely accurate and ea~y to read, particularly from a paper strip which at the sarne time provides a perrnanent record, (ii) by means of the device it is possible to centre the roller: one measures with the electronic instru-ment 3 (when the horizontal movement of the measuring frame 1 is locked up) at both ends of the roller and centres the roller on the basis of the result of the measurement, (iii) since the device enables measurements to be made whilst the roller rotates, it is easy to correct a fault without delay, (iv) the members 2 do not bite into the roller 5 and the members 2 do not collect impurities, (v) it is possible to measure the roller 5 from - one end up to the other end, : (vi) the measuring frame 1 is easily and rapidly changeable for another of a different size.
, , _ ~, _
Claims (6)
1. A precision measuring device for cylindrical objects particularly large rollers for paper mills, the device operat-ing electronically and being provided with a digital display and a printer and the device being fixable on the carriage of a lathe or grinding machine for machining the roller, the device having a measuring frame movable in the plane at right angles to the longitudinal axis to be measured, the measuring frame carrying followers with respective rolling and swiveling members for engaging the outer periphery of the roller, the first follower being disposed at one side of the roller, being spring loaded towards the roller and being linked to electronic measuring means, the second follower being adjust-ably secured on the diametrically opposite side of the roller from the first follower and the third follower being disposed above the highest point of the roller so that the weight of the measuring frame bears against the roller through the third follower, the weight of the measuring frame bearing on the roller being reduced by an adjustable counterbalance, the measuring frame being laterally slidable on ball or roller bearing mountings and also pivotable about a substantially longitudinal axis, so that the rolling members can accurately follow the outer periphery of the roller as the latter rotates during machining of the roller.
2. A measuring device, according to claim 1, wherein the measuring frame is secured by means of a fastening bar and a wheel screw to one end of a slide arm the other end of which is slidable with respect to a quadrangular slide support which is pivoted about said substantially longitudinal axis to a supporting part, the slide support having an extension with said counterbalance slidable thereon, the supporting part being vertically movable upon, and supported by, a supporting pillar.
3. A measuring device, according to claim 1, wherein the rolling and swiveling members are rotatably supported by ball bearings on support parts which carry rods which are rotatably mounted by bearings with respect to the remainder of the followers, the rotational axis of each rolling and swiveling member being eccentric with respect to the rod axis so that the rolling and swiveling member can swivel to take up the right direction, and wherein addition-ally the rolling members are provided with thin scrapers which keep the rolling members clean.
4. A measuring device, according to claim 3, wherein the outer surface of each rolling and swiveling member is part-spherical except for a central part which engages the roller and which is cylindrical, the end of the support part forming a bearing fork into which an axle of the rolling member is fitted and the end of the support part being part-spherical in shape and complementing the part-spherical shape of the rolling member and wherein the support part is balanced with respect to the longitudinal axis of the rod by means of a counterbalance weight.
5. A measuring device, according to claim 2, wherein the rolling and swiveling members are rotatably supported by ball bearings on support parts which carry rods which are rotatably mounted by bearings with respect to the remainder of the followers, the rotational axis of each rolling and swiveling member being eccentric with respect to the rod axis so that the rolling and swiveling member can swivel to take up the right direction, and wherein addition-ally the rolling members are provided with thin scrapers which keep the rolling members clean.
6. A measuring device, according to claim 5, wherein the outer surface of each rolling and swiveling member is part-spherical except for a central part which engages the roller and which is cylindrical, the end of the support part forming a bearing fork into which an axle of the rolling member is fitted and the end of the support part being part-spherical in shape and complementing the part-spherical shape of the rolling member and wherein the support part is balanced with respect to the longitudinal axis of the rod by means of a counterbalance weight.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI780841A FI57708C (en) | 1978-03-17 | 1978-03-17 | PRECISIONSMAETANORDNING FOER CYLINDRISKA FOEREMAOL |
| FI780,841 | 1978-03-17 | ||
| FI790306A FI59742C (en) | 1979-01-30 | 1979-01-30 | MAET- OCH STOEDSPETS VID PRECISIONSMAETANORDNING FOER CYLINDRISKA FOEREMAOL |
| FI790,306 | 1979-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1116843A true CA1116843A (en) | 1982-01-26 |
Family
ID=26156941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000323444A Expired CA1116843A (en) | 1978-03-17 | 1979-03-14 | Precision measuring device for cylindrical objects |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT388048B (en) |
| BR (1) | BR7901681A (en) |
| CA (1) | CA1116843A (en) |
| CH (1) | CH642742A5 (en) |
| DE (1) | DE2909836A1 (en) |
| FR (1) | FR2420118A1 (en) |
| GB (1) | GB2020030B (en) |
| IT (1) | IT1111703B (en) |
| NL (1) | NL185955C (en) |
| NO (1) | NO149296C (en) |
| SE (1) | SE439688B (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT366498B (en) * | 1980-04-23 | 1982-04-13 | Latschbacher Kajetan | MEASURING TOOL FOR MEASURING THE DIAMETER OF ROUND WOODS AND THE LIKE |
| IT1147390B (en) * | 1981-07-28 | 1986-11-19 | Sasib Spa | CONTINUOUS SENSOR DEVICE TO DETECT AND CONTROL THE EXHAUSTION OF A TAPE REEL |
| JPS5998318U (en) * | 1982-12-23 | 1984-07-03 | 株式会社ミツトヨ | Digital display mounting structure |
| FR2566911A1 (en) * | 1984-06-29 | 1986-01-03 | Pasteur Institut | PROBE AND METHOD FOR THE DIAGNOSIS OF THE SEX OF A HUMAN EMBRYO |
| AT383534B (en) * | 1985-04-18 | 1987-07-10 | Heid Ag Maschf | MEASURING DEVICE ON MACHINE TOOLS |
| DE3900491A1 (en) * | 1989-01-10 | 1990-07-12 | Hoesch Stahl Ag | MEASURING DEVICE FOR A ROUND GRINDING MACHINE |
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| CN111397483B (en) * | 2020-04-20 | 2021-10-12 | 江西鑫尔利电力科技有限公司 | Special tool for measuring diameter of iron core column |
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| CN114988208B (en) * | 2022-04-27 | 2024-01-09 | 神宇通信科技股份公司 | Coaxial cable production height adjusting device |
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| CN116174756B (en) * | 2023-03-03 | 2024-06-07 | 西南石油大学 | Quick measuring device is used in lathe production |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2501130A (en) * | 1945-03-31 | 1950-03-21 | Fred W Kuppersmith | Gauge for checking external dimensions of circular work |
| DE837608C (en) * | 1949-10-18 | 1952-04-28 | Rudolf Westenberger | Device for monitoring and measuring the grinding process on cylindrical grinding machines |
| DE951775C (en) * | 1954-05-23 | 1956-10-31 | Georg Reicherter | Equestrian training with permanent magnets |
| US3802087A (en) * | 1971-07-19 | 1974-04-09 | Inductosyn Corp | Measuring apparatus |
| CA1051232A (en) * | 1976-06-18 | 1979-03-27 | Usm Corporation | Method and apparatus for aligning the position of a workpiece in a roll turning lathe |
-
1979
- 1979-03-08 NO NO790783A patent/NO149296C/en unknown
- 1979-03-13 SE SE7902255A patent/SE439688B/en not_active IP Right Cessation
- 1979-03-13 DE DE19792909836 patent/DE2909836A1/en active Granted
- 1979-03-14 GB GB7909039A patent/GB2020030B/en not_active Expired
- 1979-03-14 CA CA000323444A patent/CA1116843A/en not_active Expired
- 1979-03-15 AT AT0193979A patent/AT388048B/en not_active IP Right Cessation
- 1979-03-15 NL NLAANVRAGE7902072,A patent/NL185955C/en not_active IP Right Cessation
- 1979-03-15 IT IT20998/79A patent/IT1111703B/en active
- 1979-03-16 CH CH252779A patent/CH642742A5/en not_active IP Right Cessation
- 1979-03-16 FR FR7906764A patent/FR2420118A1/en active Granted
- 1979-03-16 BR BR7901681A patent/BR7901681A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT388048B (en) | 1989-04-25 |
| NO149296B (en) | 1983-12-12 |
| DE2909836C2 (en) | 1989-05-18 |
| NO790783L (en) | 1979-09-18 |
| NL185955C (en) | 1990-08-16 |
| NO149296C (en) | 1984-03-21 |
| NL7902072A (en) | 1979-09-19 |
| CH642742A5 (en) | 1984-04-30 |
| DE2909836A1 (en) | 1979-09-27 |
| BR7901681A (en) | 1979-10-16 |
| FR2420118A1 (en) | 1979-10-12 |
| IT7920998A0 (en) | 1979-03-15 |
| IT1111703B (en) | 1986-01-13 |
| FR2420118B1 (en) | 1983-11-25 |
| SE439688B (en) | 1985-06-24 |
| GB2020030B (en) | 1982-12-08 |
| SE7902255L (en) | 1979-09-18 |
| GB2020030A (en) | 1979-11-07 |
| ATA193979A (en) | 1988-09-15 |
| NL185955B (en) | 1990-03-16 |
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| MKEX | Expiry |