CN109027187B - Rack convenient to high accuracy position control - Google Patents
Rack convenient to high accuracy position control Download PDFInfo
- Publication number
- CN109027187B CN109027187B CN201810951185.2A CN201810951185A CN109027187B CN 109027187 B CN109027187 B CN 109027187B CN 201810951185 A CN201810951185 A CN 201810951185A CN 109027187 B CN109027187 B CN 109027187B
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- China
- Prior art keywords
- plate
- movable
- rack
- column
- light
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- 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.)
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Links
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/26—Racks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
- F16H2061/1216—Display or indication of detected failures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a rack convenient for high-precision position control, which comprises a controller, a wireless communication unit, a rack base body and a plurality of teeth positioned on the rack base body, wherein tooth grooves are formed between adjacent teeth, movable columns are arranged at the tooth grooves and can be pressed down and reset automatically, the movement of the movable columns drives a first light-transmitting sheet and a second light-transmitting sheet to move, and a first laser emitter, a first light intensity detector, a second laser emitter and a second light intensity detector are also arranged in the rack base body. The rack can accurately control the position and is convenient to use.
Description
Technical Field
The invention relates to the field of mechanical transmission, in particular to a rack convenient for high-precision position control.
Background
The cooperation of the rack and the gear is mainly used for switching the linear motion and the rotary motion, and the traditional rack is often provided with a plurality of teeth on a rack base body so as to be used for meshing with the gear. The control system of the whole machine is not aware of at a certain moment in time, in particular which tooth slot is in engagement with the tooth of the gear. So that the control of the position of the rack is very inconvenient in the specific control.
Disclosure of Invention
The invention aims to: the invention aims to overcome the defects of the prior art and provides a rack convenient for high-precision position control.
The technical scheme is as follows: the utility model provides a rack, includes controller, wireless communication unit, rack base member and a plurality of tooth that are located on the rack body, forms the tooth's socket between the adjacent tooth, the rack base member is the open cuboid in both ends, the rack base member includes roof, bottom plate, first curb plate and second curb plate, roof and bottom plate are connected to first curb plate, roof and bottom plate are connected to the second curb plate, the one end fixedly connected with first closure plate of rack base member, the other end fixedly connected with second closure plate, first closure plate department has first reference column and first reference column down, second closure plate has second upper reference column and second reference column down, have upper fixed plate and lower fixed plate in the rack base member, upper fixed plate one end has the first locating hole of cooperation with first upper reference column, the other end has the second upper locating hole of cooperation with second upper reference column, one end of the lower fixing plate is provided with a first lower locating hole matched with the first lower locating column, the other end of the lower fixing plate is provided with a second lower locating hole matched with the second lower locating column, the top plate, the upper fixing plate, the lower fixing plate and the bottom plate are parallel to each other, the upper surface of the upper fixing plate is fixedly provided with inserting rods, the number of the inserting rods is equal to that of tooth grooves, each tooth groove is provided with a cylindrical hole, each cylindrical hole is internally inserted with a movable column, the movable column is provided with an inserting hole inserted by the inserting rod, the bottom end of the movable column is provided with a circular ring part, the outer diameter of the circular ring part is larger than the diameter of the cylindrical hole, the inserting rod is sleeved with a compression spring positioned between the upper fixing plate and the circular ring part, the circular ring part is fixedly connected with a first movable rod and a second movable rod, the bottom end of the first movable rod is fixedly provided with a first transparent sheet, the bottom end of the second movable rod is fixedly provided with a second light-transmitting sheet, the upper fixed plate is provided with a plurality of first limiting holes inserted by the first movable rod and a plurality of second limiting holes inserted by the second movable rod, the lower fixed plate is provided with a plurality of first through holes which can be penetrated by the first light-transmitting sheet and a plurality of second through holes which can be penetrated by the second light-transmitting sheet, the number of the first limiting holes, the number of the second limiting holes, the number of the first through holes, the number of the second through holes and the number of tooth grooves are all equal, the first closed plate is provided with a first laser emitter and a second laser emitter, the second closed plate is provided with a first light intensity detector and a second light intensity detector, the first laser emitter is closer to the lower fixed plate relative to the second laser emitter, the light transmittance of all the second light-transmitting lenses is the same, and the light transmittance of all the first light-transmitting lenses is different from each other; when a certain movable column is at the highest position, the bottom ends of the first and second light-transmitting lenses corresponding to the movable column are higher than the upper surface of the lower fixed plate; when a certain movable column is at the lowest position, the bottom ends of the first and second lenses corresponding to the movable column are lower than the lower surface of the lower fixed plate, the light beam of the first laser transmitter can pass through the first lens corresponding to the movable column and cannot pass through the second lens corresponding to the movable column, and the light beam of the second laser transmitter can pass through the second lens corresponding to the movable column and cannot pass through the first lens corresponding to the movable column.
Further, the first movable column and the second movable column are cylindrical columns, and the length of the first movable column is smaller than that of the second movable column.
Further, the plurality of first lenses sequentially increase from one end near the first closing plate to one end near the second closing plate.
Further, the number of the tooth grooves is 4-8.
Further, the first sealing plate is fixed with the top plate and the bottom plate through bolts, and the second sealing plate is fixed with the top plate and the bottom plate through bolts.
Further, the number of the first upper positioning column, the second upper positioning column, the first lower positioning column and the second lower positioning column is more than or equal to 2.
Further, the cross sections of the first through hole and the second through hole are rectangular.
Further, the upper fixing plate and the lower fixing plate are both opaque plates, the movable column comprises a cylindrical part and a hemispherical part positioned at the top end of the cylindrical part, and the diameter of the cylindrical part, the diameter of the hemispherical part and the diameter of the cylindrical hole of the movable column are all equal; the movable column and the circular ring part are integrally formed.
Further, the controller controls, in a specific state, the wireless communication unit to transmit an alarm signal when the measured value of the second light intensity detector is not within the set range; the specific state refers to that one of the movable columns is in the lowest state, and the other movable columns are in the highest state.
Further, the first laser transmitter, the second laser transmitter, the first light intensity detector, the second light intensity detector and the wireless communication unit are all connected with the controller.
Further, the controller knows which tooth slot is engaged with the tooth of the gear at this time based on the measured value of the first light intensity detector.
Further, the number of tooth grooves is 6, and the number of teeth is 7.
Further, for any one movable column, no matter what state the movable column is in, the beam of the first laser emitter cannot pass through the second movable rod of the movable column.
Further, the first and second laser transmitters are both positioned between the bottom plate and the lower fixing plate.
The beneficial effects are that: the rack provided by the invention can be used for knowing the specific position of the rack at the moment according to the signal of the light intensity detector, and the accurate tooth socket is meshed with the gear, so that the position control is convenient and accurate.
Drawings
FIG. 1 is a schematic diagram of a rack and pinion engagement, with a third tooth slot engaged with a tooth of the pinion;
fig. 2 is a schematic diagram of the rack and pinion engagement, with a second tooth slot engaged with the teeth of the pinion.
Detailed Description
Reference numerals: 1.1 roof; 1.2 a bottom plate; 1.3 teeth; 2.1 a first closure panel; 2.2 a second closure panel; 2.1.1 first lower positioning posts; 2.1.2 first upper positioning posts; 2.2.1 second upper positioning posts; 2.2.2 second lower positioning posts; 3.1 a movable column; 3.1.1 annular portions; 3.2 inserting a rod; 3.3 compressing the spring; 3.4 upper fixing plate; 3.5 lower fixing plate; 3.5.1 first vias; 3.5.2 second vias; 3.6 a first movable column; 3.7 a second movable column; 3.8 first light transmitting sheet; 3.9 second light transmitting sheet; 4.1 a first laser transmitter; 4.2 a second light intensity detector; 5.1 a second laser transmitter; 5.2 a second light intensity detector; 10 gears.
The utility model provides a rack, includes controller, wireless communication unit, rack base member and a plurality of tooth 1.3 that are located on the rack body, forms the tooth's socket between the adjacent tooth, the rack base member is the open cuboid in both ends, the rack base member includes roof 1.1, bottom plate 1.2, first curb plate and second curb plate, roof and bottom plate are connected to first curb plate, roof and bottom plate are connected to the second curb plate, the one end fixedly connected with first closure plate 2.1 of rack base member, the other end fixedly connected with second closure plate 2.2, first closure plate department has first upper positioning post 2.1.2 and first lower positioning post 2.1.1, second closure plate has second upper positioning post 2.2.1 and second lower positioning post 2.2.2, have upper fixed plate 3.4 and lower fixed plate 3.5 in the rack base member, upper fixed plate one end has with first upper positioning hole of first upper positioning post complex, the other end is provided with a second upper positioning hole matched with a second upper positioning column, one end of the lower fixing plate is provided with a first lower positioning hole matched with a first lower positioning column, the other end is provided with a second lower positioning hole matched with a second lower positioning column, the top plate 1.1, the upper fixing plate 3.4, the lower fixing plate 3.5 and the bottom plate 1.2 are parallel to each other, the upper surface of the upper fixing plate is fixedly provided with inserting rods 3.2, the number of the inserting rods 3.2 is equal to the number of tooth sockets, each tooth socket is provided with a cylindrical hole, each cylindrical hole is internally inserted with a movable column 3.1, the movable column is provided with an inserting hole inserted by the inserting rod, the bottom end of the movable column is provided with a circular ring part 3.1.1, the outer diameter of the circular ring part 3.1.1 is larger than the diameter of the cylindrical hole, the compressing springs 3.3 positioned between the upper fixing plate and the circular ring part are sleeved on the inserting rods, the circular ring part is fixedly connected with a first movable rod 3.6 and a second movable rod 3.7, the bottom end of the first movable rod is fixed with a first light-transmitting sheet 3.8, the bottom end of the second movable rod is fixed with a second light-transmitting sheet 3.9, the upper fixed plate is provided with a plurality of first limiting holes inserted by the first movable rod and a plurality of second limiting holes inserted by the second movable rod, the lower fixed plate is provided with a plurality of first through holes which can be penetrated by the first light-transmitting sheet and a plurality of second through holes which can be penetrated by the second light-transmitting sheet, the number of the first limiting holes, the number of the second limiting holes, the number of the first through holes and the number of the second through holes are equal to the number of tooth grooves, the first closed plate 2.1 is provided with a first laser transmitter 4.1 and a second laser transmitter 5.1, the second closed plate 2 is provided with a first light intensity detector 4.2 and a second light intensity detector 5.2, the first laser transmitter 4.1 is closer to the lower fixed plate than the second laser transmitter 5.1, and the first light transmittances of all the second light transmitters are different from each other; when a certain movable column is at the highest position, the bottom ends of the first and second light-transmitting lenses corresponding to the movable column are higher than the upper surface of the lower fixed plate; when a certain movable column is at the lowest position, the bottom ends of the first and second light-transmitting lenses corresponding to the movable column are lower than the lower surface of the lower fixed plate, the light beam of the first laser transmitter can pass through the first light-transmitting lens 3.8 corresponding to the movable column and cannot pass through the second light-transmitting lens 3.9 corresponding to the movable column, and the light beam of the second laser transmitter can pass through the second light-transmitting lens corresponding to the movable column and cannot pass through the first light-transmitting lens corresponding to the movable column.
The first movable column and the second movable column are cylindrical columns, and the length of the first movable column is smaller than that of the second movable column. The plurality of first light-transmitting lenses sequentially increase from one end near the first closing plate to one end near the second closing plate. The number of the tooth grooves is 4-8. The first closing plate is fixed with the top plate and the bottom plate through bolts, and the second closing plate is fixed with the top plate and the bottom plate through bolts. The number of the first upper positioning column, the second upper positioning column, the first lower positioning column and the second lower positioning column is more than or equal to 2. The cross sections of the first through hole and the second through hole are rectangular. The upper fixing plate and the lower fixing plate are both opaque plates, the movable column comprises a cylindrical part and a hemispherical part positioned at the top end of the cylindrical part, and the diameter of the cylindrical part, the diameter of the hemispherical part and the diameter of the cylindrical hole of the movable column are all equal; the movable column and the circular ring part are integrally formed.
As shown in fig. 1, the beam of the first laser transmitter appears to pass the second movable bar because of the schematic limitation, and in fact, the beam of the first laser transmitter and the second movable bar are offset (i.e., the beam of the first laser transmitter does not pass the second movable bar, but passes from the side of the second movable bar), and no matter what state the second movable bar is, the beam of the first laser transmitter does not pass the second movable bar.
According to the rack disclosed by the invention, each tooth slot is internally provided with the movable column, and when the tooth slot is meshed with the tooth teeth of the gear, the movable column is pressed down so that a light beam of the first laser transmitter passes through the first light-transmitting mirror to be detected by the first light intensity detector. Since the light transmittance of each first lens is different from each other, it is possible to know which first lens is penetrated by the light beam based on the light intensity, and thus which tooth space is engaged with the gear at this time. Thereby can carry out accurate control to the position of rack. The rack of the invention is particularly suitable for the following structure: the whole transmission structure is stepping, the gear is active, and the rack is passive. The gear is driven by the driving mechanism to rotate only a set angle (the set angle is equal to 360 degrees divided by the number of gear teeth) clockwise or anticlockwise each time, but not at any angle, that is, the gear rotates only one tooth each time, and when the gear stops each time, one tooth of the gear is just completely meshed with one tooth slot of the rack. At this time, the gear does not need to be provided with a position monitoring mechanism, and the gear has the function of position monitoring, so that no matter how the gear rotates, when the gear stops, the controller can acquire the position of the gear according to the signal of the first light intensity detector, thereby performing position control.
In order to prevent the gear and the rack from being separated, the rotation range of the gear may be limited, that is, when the rack is moved to the extreme end positions of both sides, teeth of the gear are engaged with at least tooth grooves of the extreme end portions of the rack. In theory, no matter at which angle the gear is stopped, there should be and only one second lens is penetrated by the beam of the second laser transmitter, so in a specific state (the specific state refers to that one of the movable columns is at the lowest state, and the other movable columns are at the highest state, i.e. one tooth of the gear is fully engaged with one tooth slot of the rack), the measured value of the second light intensity detector should be within a set range, if no fault is illustrated, such as the compression spring loses elasticity, the movable column cannot be reset, etc. At this time, the alarm reminds maintenance. The setting of the range, not the set value, takes into account the error of the measurement. The set range is equal to the set value plus or minus an error.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. The utility model provides a rack convenient to high accuracy position control, its characterized in that, including controller, wireless communication unit, rack base member and a plurality of tooth that is located the rack body, form the tooth's socket between the adjacent tooth, the rack base member is the open cuboid in both ends, the rack base member includes roof, bottom plate, first curb plate and second curb plate, roof and bottom plate are connected to first curb plate, roof and bottom plate are connected to the second curb plate, the first closure board of one end fixedly connected with of rack base member, the second closure board of the other end fixedly connected with, first closure board department has first upper positioning post and first lower positioning post, second closure board has second upper positioning post and second lower positioning post, have upper fixed plate and lower fixed plate in the rack base member, upper fixed plate one end has with first upper positioning hole of first upper positioning post complex, the other end is provided with a second upper locating hole matched with a second upper locating column, one end of the lower fixing plate is provided with a first lower locating hole matched with the first lower locating column, the other end is provided with a second lower locating hole matched with the second lower locating column, the top plate, the upper fixing plate, the lower fixing plate and the bottom plate are parallel to each other, the upper surface of the upper fixing plate is fixedly provided with inserting rods, the number of the inserting rods is equal to that of tooth grooves, each tooth groove is provided with a cylindrical hole, each cylindrical hole is internally inserted with a movable column, the movable column is provided with an inserting hole inserted by the inserting rod, the bottom end of the movable column is provided with a circular ring part, the outer diameter of the circular ring part is larger than the diameter of the cylindrical hole, the inserting rod is sleeved with a compression spring positioned between the upper fixing plate and the circular ring part, the circular ring part is fixedly connected with a first movable rod and a second movable rod, the bottom end of the first movable rod is fixedly provided with a first light-transmitting lens, the bottom end of the second movable rod is fixedly provided with a second light-transmitting lens, the upper fixed plate is provided with a plurality of first limiting holes inserted by the first movable rod and a plurality of second limiting holes inserted by the second movable rod, the lower fixed plate is provided with a plurality of first through holes which can be penetrated by the first light-transmitting lens and a plurality of second through holes which can be penetrated by the second light-transmitting lens, the number of the first limiting holes, the number of the second limiting holes, the number of the first through holes and the number of the second through holes are equal to the number of tooth spaces, the first closed plate is provided with a first laser emitter and a second laser emitter, the second closed plate is provided with a first light intensity detector and a second light intensity detector, the first laser emitter is closer to the lower fixed plate relative to the second laser emitter, the light transmittance of all the second light-transmitting lenses is the same, and the light transmittance of all the first light-transmitting lenses is different from each other; when a certain movable column is at the highest position, the bottom ends of the first and second light-transmitting lenses corresponding to the movable column are higher than the upper surface of the lower fixed plate; when a certain movable column is at the lowest position, the bottom ends of the first and second lenses corresponding to the movable column are lower than the lower surface of the lower fixed plate, the light beam of the first laser transmitter can pass through the first lens corresponding to the movable column and cannot pass through the second lens corresponding to the movable column, and the light beam of the second laser transmitter can pass through the second lens corresponding to the movable column and cannot pass through the first lens corresponding to the movable column.
2. The rack of claim 1, wherein the first and second movable posts are cylindrical posts, and wherein the length of the first movable post is less than the length of the second movable post.
3. The rack facilitating high-precision position control according to claim 1, wherein the plurality of first light-transmitting lenses sequentially increase from an end near the first closing plate to an end near the second closing plate.
4. The rack facilitating high precision position control of claim 1, wherein the number of tooth slots is 4-8.
5. The rack facilitating high precision position control as claimed in claim 1, wherein the first closing plate is fixed to both the top plate and the bottom plate by bolts, and the second closing plate is fixed to both the top plate and the bottom plate by bolts.
6. The rack facilitating high-precision position control of claim 1, wherein the number of the first upper positioning column, the second upper positioning column, the first lower positioning column and the second lower positioning column is 2 or more.
7. The rack facilitating high precision position control as claimed in claim 1, wherein the first and second through holes are rectangular in cross section.
8. The rack facilitating high-precision position control according to claim 1, wherein the upper and lower fixed plates are opaque plates, the movable column comprises a cylindrical portion and a hemispherical portion at a top end of the cylindrical portion, and a diameter of the cylindrical portion of the movable column, a diameter of the hemispherical portion, and a diameter of the cylindrical hole of the top plate are all equal; the movable column and the circular ring part are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951185.2A CN109027187B (en) | 2018-08-21 | 2018-08-21 | Rack convenient to high accuracy position control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951185.2A CN109027187B (en) | 2018-08-21 | 2018-08-21 | Rack convenient to high accuracy position control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027187A CN109027187A (en) | 2018-12-18 |
| CN109027187B true CN109027187B (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810951185.2A Active CN109027187B (en) | 2018-08-21 | 2018-08-21 | Rack convenient to high accuracy position control |
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| Country | Link |
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| CN (1) | CN109027187B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962367B (en) * | 2021-02-24 | 2023-03-17 | 中铁二院工程集团有限责任公司 | Construction method of tooth-track railway ballast track system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH569208A5 (en) * | 1973-09-21 | 1975-11-14 | Far Fab Assortiments Reunies | Workpiece indexing mechanism - disc has two pins engaging in rack and turning by half-revolutions |
| CN101559426A (en) * | 2009-05-14 | 2009-10-21 | 浙江大学 | Gear-rack type laser scanning ball-sorting device |
| CN204495326U (en) * | 2015-02-03 | 2015-07-22 | 缙云县伟创电子有限公司 | A kind of stadimeter |
| JP2016211957A (en) * | 2015-05-08 | 2016-12-15 | 株式会社ミツトヨ | Contactless distance measurement method |
| CN107121750A (en) * | 2017-06-12 | 2017-09-01 | 张素平 | A kind of calibrating installation for optical imaging apparatus |
| DE102016109307A1 (en) * | 2016-05-20 | 2017-11-23 | Robert Bosch Automotive Steering Gmbh | A rack measuring device, a rack-bending device, a method of determining a deviation of a rack, and a method of bending a rack |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9227286B2 (en) * | 2011-09-20 | 2016-01-05 | Mitutoyo Corporation | Precision feeding device and precision transfer equipment |
-
2018
- 2018-08-21 CN CN201810951185.2A patent/CN109027187B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH569208A5 (en) * | 1973-09-21 | 1975-11-14 | Far Fab Assortiments Reunies | Workpiece indexing mechanism - disc has two pins engaging in rack and turning by half-revolutions |
| CN101559426A (en) * | 2009-05-14 | 2009-10-21 | 浙江大学 | Gear-rack type laser scanning ball-sorting device |
| CN204495326U (en) * | 2015-02-03 | 2015-07-22 | 缙云县伟创电子有限公司 | A kind of stadimeter |
| JP2016211957A (en) * | 2015-05-08 | 2016-12-15 | 株式会社ミツトヨ | Contactless distance measurement method |
| DE102016109307A1 (en) * | 2016-05-20 | 2017-11-23 | Robert Bosch Automotive Steering Gmbh | A rack measuring device, a rack-bending device, a method of determining a deviation of a rack, and a method of bending a rack |
| CN107121750A (en) * | 2017-06-12 | 2017-09-01 | 张素平 | A kind of calibrating installation for optical imaging apparatus |
Also Published As
| Publication number | Publication date |
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| CN109027187A (en) | 2018-12-18 |
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