CN216801172U - Leveling machine calibrating device that calibration accuracy is high - Google Patents
Leveling machine calibrating device that calibration accuracy is high Download PDFInfo
- Publication number
- CN216801172U CN216801172U CN202122582736.2U CN202122582736U CN216801172U CN 216801172 U CN216801172 U CN 216801172U CN 202122582736 U CN202122582736 U CN 202122582736U CN 216801172 U CN216801172 U CN 216801172U
- Authority
- CN
- China
- Prior art keywords
- sides
- gear
- leveling machine
- sliding groove
- compression roller
- 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 - Fee Related
Links
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Machine Tool Units (AREA)
Abstract
The utility model discloses a leveling machine calibration device with high calibration accuracy, which comprises a fixed seat, a compression roller A and a compression roller B, wherein a positioning shaft A is arranged at the middle position of two sides of the compression roller A, the outer surface of the positioning shaft A at two sides is sleeved with the fixed seat, the fixed seats at two sides are positioned at the upper end gap position of the compression roller A, the compression roller B is arranged through the positioning shaft B, a sliding groove is arranged at the middle position inside a supporting plate at one side of the compression roller B, a sliding block is sleeved on the inner surface of the sliding groove at the outer surface of the positioning shaft B, and the supporting plate is arranged at the middle position of the top end of the fixed seats at two sides. The utility model solves the problems that the existing device needs manual work to carry out timing sampling inspection through a caliper detection tool, the processing thickness and the size of a plate cannot be known in real time, the operation is complicated, the calibration quality is poor, the fixing effect of the calibration device is poor, the plate is easy to loosen after being used for a long time, and the production quality is influenced, and the calibration precision and the production quality of the utility model are improved.
Description
Technical Field
The utility model relates to the technical field of leveling machines, in particular to a leveling machine calibrating device with high calibrating accuracy.
Background
In order to remove the stress in the material, the sheet is leveled. The basic principle of roll leveling is to selectively extend portions of the material. Below the material yield point, a shorter portion of the sheet "fiber" is proportionally elongated to achieve a consistent "fiber" length. It is achieved by bending the material up and down in a cyclic reciprocating motion with a small radius of curvature as it passes through the leveling machine, causing the "fibres" of the shorter material to elongate. When the plate moves towards the outlet of the leveling machine tool, the vertical bending amplitude is gradually reduced so as to eliminate material deformation caused by severe bending at the leveling inlet of the machine tool, and the leveling machine is mainly applied to the correction of plates with various specifications and the cutting of the plates into blocks. The machine is suitable for leveling various cold and hot rolled plates. Because the operation is convenient and simple, the application range of the leveling machine is distributed in multiple industries such as machinery, metallurgy, building materials, chemical industry, electronics, electric power, light industry and the like, particularly in the industries such as shipbuilding, locomotive vehicles, boiler bridges, metal structure factories and the like, the leveling machine becomes an indispensable necessary product in production, and the leveling machine needs a calibration device to calibrate the leveling machine before production.
Present calibrating device needs the manual work to carry out the spot check regularly through slide caliper rule detection instrument, can't learn panel processing thickness size in real time, and the operation is comparatively loaded down with trivial details, and calibration quality is not good, and calibrating device fixed effect is relatively poor, easily takes place to become flexible after long-time the use, influences production quality, so far, we provide a levelling machine calibrating device that calibration accuracy is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a leveling machine calibrating device with high calibrating precision, which has the advantage of high calibrating precision and solves the problems that the conventional device needs manual work to perform regular sampling inspection through a caliper detecting tool, the processing thickness and the size of a plate cannot be known in real time, the operation is complicated, the calibrating quality is poor, the fixing effect of the calibrating device is poor, and the calibrating device is easy to loosen after being used for a long time and influences the production quality.
In order to achieve the purpose, the utility model provides the following technical scheme: a leveling machine calibration device with high calibration accuracy comprises a fixed seat, a compression roller A and a compression roller B, wherein a positioning shaft A is mounted at the middle position of two sides of the compression roller A, the outer surface of the positioning shaft A is sleeved with the fixed seat, the fixed seat at two sides is positioned at the upper end clearance position of the compression roller A, the compression roller B is mounted through the positioning shaft B, a sliding groove is arranged at the middle position inside a supporting plate at one side of the compression roller B, a sliding block is sleeved on the inner surface of the sliding groove at the outer surface of the positioning shaft B, the supporting plate is mounted at the middle position of the top end of the fixed seat at two sides, a top plate is mounted at the top end of the supporting plate at two sides, an adjusting rod is sleeved at the middle position inside the top end of the top plate, a turntable is mounted at the position of the upper end of the top plate, a handle is mounted at one side of the top end of the turntable, and a bearing is sleeved at the outer surface of the tail end of the adjusting rod, the utility model discloses a sliding table, including fixing base, fixed axle, fixing base, transmission line, bearing bottom, sliding block, fixed axle, regulating spindle, transmission line both ends surface are located gear A one side, the bearing bottom is located the roof lower extreme and installs the alignment rod, sliding block lower extreme position department all installs the slip table in sliding block bottom both sides, the fixing base top is located sliding groove upper end both sides position department and has all cup jointed the fixed axle, the inside adjusting spindle that has all cup jointed with rear surface position department of sliding groove front surface position department of fixing base, both sides adjusting spindle one end is connected respectively in both sides slip table one side intermediate position department, both sides the gear A is all installed to the adjusting spindle end, the fixing base of sliding groove one side deviates from compression roller B one side intermediate position department and installs the transfer line through spacing seat, gear B is all installed to transfer line both ends surface is located gear A one side.
Preferably, the adjusting rod is connected with the top plate in a screwing mode through a screw.
Preferably, the limiting rods are arranged on two sides of the top end of the calibrating rod and close to the middle position, and the limiting rods are sleeved on the middle position inside the top plate.
Preferably, the fixing seat on one side of the sliding groove is positioned on one side, away from the compression roller B, of the lower end of the transmission rod and close to the rear surface of the transmission rod, and an adjusting motor is installed on the lower end of the transmission rod, and the output shaft of the adjusting motor is positioned on one side of the gear B and provided with a gear C.
Preferably, the electronic dial indicator is installed at the middle position of each of the two sides of the calibration rod.
Preferably, the sliding tables are provided with two sliding tables, the sliding tables are respectively arranged at the bottom ends of the sliding grooves and located at the lower end positions of the sliding blocks, the top ends of the sliding tables and the two sides of the bottom end of the sliding block are obliquely arranged, and the two sides of the bottom end of the sliding block are matched with the sliding tables on the two sides.
Preferably, the gear a is meshed with a gear B, and the gear B is meshed with a gear C.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the leveling device, the electronic dial indicators are arranged at the middle positions of the two sides of the calibration rod, so that the effect of measuring and calibrating the leveling machine is achieved, the turntable is arranged at the position, located at the upper end of the top plate, of the top end of the adjustment rod, the handle is arranged on one side of the top end of the turntable, the bearing is arranged on the outer surface of the tail end of the adjustment shaft, and the calibration rod is arranged at the lower end of the top plate, of the bottom end of the bearing, so that the problems that the machining thickness and the machining size of a plate cannot be known in real time due to the fact that manual regular sampling inspection is carried out through a caliper detection tool, operation is complicated, and calibration quality is poor are solved, and the calibration accuracy of the leveling device is improved.
2. The adjusting motor, the transmission shaft, the adjusting shaft and the sliding block are arranged to adjust the position of the press roller B, so that the production quality is improved.
3. The calibration device has the advantages that the effect of fixing the sliding block is achieved by arranging the sliding block, the sliding block and the fixing shaft, the two sliding tables are arranged at the positions, located at the lower end of the sliding block, of the bottom end of the sliding groove, the top ends of the two sliding tables and the two sides of the bottom end of the sliding block are obliquely arranged, the two sides of the bottom end of the sliding block are matched with the two sliding tables, and the fixing shaft is arranged at the positions, located at the two sides of the upper end of the sliding groove, of the top end of the supporting plate, so that the problems that the calibration device is poor in fixing effect, and is easy to loosen after being used for a long time, and the production quality is affected are solved, and the production quality of the calibration device is improved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a side view of the fixing base of the present invention;
fig. 4 is an enlarged structural diagram of B in fig. 3.
In the figure: 1. a fixed seat; 2. pressing a roller A; 3. a compression roller B; 4. positioning the shaft A; 5. positioning the shaft B; 6. an electronic dial indicator; 7. a limiting rod; 8. a calibration rod; 9. a top plate; 10. a support plate; 11. a turntable; 12. a handle; 13. adjusting a rod; 14. a bearing; 15. a transmission rod; 16. an adjustment shaft; 17. a fixed shaft; 18. a sliding groove; 19. a sliding block; 20. a gear A; 21. a gear B; 22. a gear C; 23. adjusting the motor; 24. a limiting seat; 25. and a sliding table.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, a leveling machine calibration device with high calibration accuracy according to the present invention includes: a leveling machine calibrating device with high calibrating accuracy comprises a fixed seat 1, a press roller A2 and a press roller B3, wherein a positioning shaft A4 is arranged at the middle position of two sides of a press roller A2, the outer surface of the positioning shaft A4 of the two sides is sleeved with the fixed seat 1, a press roller B3 is arranged at the gap position of the upper end of the press roller A2 of the fixed seat 1 of the two sides through the positioning shaft B5, a sliding groove 18 is arranged at the middle position inside a supporting plate 10 on one side of the press roller B3, a sliding block 19 is sleeved on the inner surface of the sliding groove 18 and positioned on the outer surface of the positioning shaft B5, a supporting plate 10 is arranged at the middle position of the top end of the fixed seat 1 of the two sides, a top plate 9 is arranged at the top end of the supporting plate 10 of the two sides, an adjusting rod 13 is sleeved at the middle position inside the top plate 9, the adjusting rod 13 is connected with the top plate 9 through spiral rotation for driving the adjusting rod 8 to move up and down, a rotary plate 11 is arranged at the top end of the top plate 9, a rotary plate 11, a handle 12 is arranged at one side of the top end of the rotary plate 11, the outer surface of the tail end of the adjusting rod 13 is sleeved with a bearing 14, the bottom end of the bearing 14 is positioned at the lower end of the top plate 9 and is provided with a calibrating rod 8, two sides of the top end of the calibrating rod 8 are provided with limiting rods 7 near the middle position, the limiting rods 7 at two sides are sleeved at the middle position inside the top plate 9, the middle positions at two sides of the calibrating rod 8 are provided with electronic dial indicators 6 to facilitate the measurement of a press roller B3, the sliding tables 25 are arranged at the lower end positions of the sliding blocks 19 at two sides of the bottom end of the sliding groove 18, the fixed shafts 17 are sleeved at the two sides of the top end of the fixed seat 1 at the upper end of the sliding groove 18, the adjusting shafts 16 are sleeved at the front surface position and the rear surface position of the sliding groove 18 inside the fixed seat 1, the outer surfaces at one end of the two adjusting shafts 16 at two sides are provided with gears A20 at the front surface position and the rear surface position of the fixed seat 1, the tail ends of the adjusting shafts 16 at two sides are respectively connected at the middle position of one side of the sliding tables 25 at two sides, the transmission rod 15 is installed through the limiting seat 24 at the middle position of one side of the fixed seat 1, which deviates from the press roller B3, of one side of the sliding groove 18, and the gear B21 is installed on the outer surfaces of the two ends of the transmission rod 15, which are located on one side of the gear A20.
Referring to fig. 3 and 4, a leveling machine calibration device with high calibration accuracy according to the present invention includes: a leveling machine calibrating device with high calibrating accuracy comprises a fixed seat 1, a press roller A2 and a press roller B3, wherein a positioning shaft A4 is arranged at the middle position of two sides of a press roller A2, the outer surface of the positioning shaft A4 of the two sides is sleeved with the fixed seat 1, a press roller B3 is arranged at the gap position of the upper end of the press roller A2 of the fixed seat 1 of the two sides through the positioning shaft B5, a sliding groove 18 is arranged at the middle position inside a supporting plate 10 on one side of the press roller B3, a sliding block 19 is sleeved on the inner surface of the sliding groove 18 and positioned on the outer surface of the positioning shaft B5, the supporting plate 10 is arranged at the middle position of the top end of the fixed seat 1 of the two sides, a top plate 9 is arranged at the top end of the supporting plate 10 of the two sides, an adjusting rod 13 is sleeved at the middle position inside the top plate 9, a rotating plate 11 is arranged at the top end of the adjusting rod 13, a handle 12 is arranged on one side of the top end of the rotating plate 11, a bearing 14 is sleeved on the outer surface of the tail end of the adjusting rod 13, a calibrating rod 14, a calibrating rod 8 is arranged at the bottom end of the lower end of the top plate 9, the two sides of the bottom end of the sliding groove 18, which are positioned at the lower end of the sliding block 19, are respectively provided with two sliding tables 25, the two sliding tables 25 are respectively arranged at the bottom end of the sliding groove 18, which is positioned at the lower end of the sliding block 19, the top ends of the two sliding tables 25 and the two sides of the bottom end of the sliding block 19 are obliquely arranged, the two sides of the bottom end of the sliding block 19 are matched with the two sliding tables 25, which are used for upwards pushing the sliding block 19 and adjusting the horizontal position of the press roller B3, the positions of the two sides, which are positioned at the upper ends of the sliding groove 18, at the top end of the fixed seat 1, are both sleeved with the fixed shaft 17, which is used for fixing the sliding block 19, so as to increase the fixing effect of the utility model, the positions, which are positioned at the front surface and the rear surface of the sliding groove 18, inside the fixed seat 1 are both sleeved with the adjusting shafts 16, the outer surfaces of one end of the two adjusting shafts 16, which are positioned at the positions, which are positioned at the front surface and the rear surface of the fixed seat 1, are both provided with the gears A20, and the ends of the two adjusting shafts 16 are respectively connected at the middle positions of one side of the two sliding tables 25, fixing base 1 of sliding groove 18 one side deviates from compression roller B3 one side intermediate position department and installs transfer line 15 through spacing seat 24, transfer line 15 both ends surface is located gear A20 one side and all installs gear B21, fixing base 1 of sliding groove 18 one side deviates from compression roller B3 one side and is located the transfer line 15 lower extreme and install adjusting motor 23 near rear surface position department, adjusting motor 23 output shaft is located gear B21 one side and installs gear C22, gear A20 meshes with gear B21 mutually, gear B21 meshes with gear C22 mutually, be convenient for rotate simultaneously through adjusting motor 23 and adjust axle 16, adjust compression roller B3's levelness.
The working principle is as follows: after the device is installed, the rotary table 11 is rotated through the handle 12, the adjusting rod 13 is driven to rotate through the rotary table 11, the adjusting rod 8 is moved downwards through the adjusting rod 13, the pressure roller B3 is measured through the electronic dial indicator 6 on the two sides of the adjusting rod 8, the sliding block 19 is loosened through the fixed shaft 17, the gear C22 is driven to rotate through the adjusting motor 23, the transmission rod 15 is driven to rotate through the gear C22 and the gear B21, the transmission rod 15 and the gear B21 are driven to simultaneously drive the gears A20 on the two sides to rotate, the adjusting shaft 16 is driven to rotate through the gear A20, the sliding table 25 is moved through the adjusting shaft 16, the use position of the sliding block 19 is adjusted through the sliding table 25, the sliding block 19 is fixed through the fixed shaft 17 after the electronic dial indicator 6 and the adjusting pressure roller B3 are observed, the sliding block 19 is immediately leveled through the pressure roller A2 and the pressure roller B3, and the work flow of the device is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a levelling machine calibrating device that calibration accuracy is high, includes fixing base (1), compression roller A (2) and compression roller B (3), its characterized in that: the roller pressing machine is characterized in that a positioning shaft A (4) is installed at the middle position of the two sides of the pressing roller A (2), a fixing seat (1) is sleeved on the outer surface of the positioning shaft A (4), the fixing seat (1) at the two sides is located at the upper end clearance position of the pressing roller A (2), a pressing roller B (3) is installed at the position of the positioning shaft B (5), a sliding groove (18) is arranged at the middle position inside a supporting plate (10) at one side of the pressing roller B (3), a sliding block (19) is sleeved on the inner surface of the sliding groove (18) at the outer surface of the positioning shaft B (5), a supporting plate (10) is installed at the middle position of the top end of the fixing seat (1) at the two sides, a top plate (9) is installed at the top end of the supporting plate (10), an adjusting rod (13) is sleeved at the middle position inside the top end of the top plate (9), and a turntable (11) is installed at the position of the top end of the adjusting rod (13), handle (12) are installed to carousel (11) top one side, adjust pole (13) terminal surface and cup jointed bearing (14), bearing (14) bottom is located roof (9) lower extreme and installs alignment pole (8), sliding groove (18) bottom both sides are located sliding block (19) lower extreme position department and all install slip table (25), fixed axle (17) have all been cup jointed to fixing base (1) top position sliding groove (18) upper end both sides position department, adjusting axle (16) have all been cup jointed to fixing base (1) inside position sliding groove (18) front surface position department and rear surface position department, both sides adjusting axle (16) one end is connected respectively in both sides slip table (25) one side intermediate position department, both sides gear A (20) are all installed to adjusting axle (16) end, fixing base (1) of sliding groove (18) one side deviates from compression roller B (3) one side intermediate position department and installs transfer line (15) through spacing seat (24), and the outer surfaces of the two ends of the transmission rod (15) are positioned on one side of the gear A (20) and are provided with gears B (21).
2. The leveling machine calibration apparatus of claim 1, wherein the leveling machine calibration apparatus further comprises: the adjusting rod (13) is connected with the top plate (9) in a screwing mode through a spiral mode.
3. The leveling machine calibration apparatus of claim 1, wherein the leveling machine calibration apparatus further comprises: limiting rods (7) are installed at the positions, close to the middle positions, of the two sides of the top end of the calibrating rod (8), and the limiting rods (7) are sleeved at the middle positions inside the top plate (9).
4. The leveling machine calibration apparatus of claim 1, wherein the leveling machine calibration apparatus further comprises: the fixing base (1) of sliding groove (18) one side deviates from compression roller B (3) one side and is located transfer line (15) lower extreme and is close to rear surface position department and install adjusting motor (23), gear C (22) are installed to adjusting motor (23) output shaft position in gear B (21) one side.
5. A leveler calibration apparatus with high calibration accuracy as in claim 1, wherein: and the middle positions of the two sides of the calibration rod (8) are provided with electronic dial indicators (6).
6. The leveling machine calibration apparatus of claim 1, wherein the leveling machine calibration apparatus further comprises: slip table (25) are equipped with two altogether, and two slip table (25) branch is located sliding block (19) lower extreme position department in groove (18) bottom of sliding, both sides slip table (25) top and sliding block (19) bottom both sides all slope the setting, sliding block (19) bottom both sides agree with mutually with both sides slip table (25).
7. The leveling machine calibration apparatus of claim 1, wherein the leveling machine calibration apparatus further comprises: the gear A (20) is meshed with a gear B (21), and the gear B (21) is meshed with a gear C (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122582736.2U CN216801172U (en) | 2021-10-26 | 2021-10-26 | Leveling machine calibrating device that calibration accuracy is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122582736.2U CN216801172U (en) | 2021-10-26 | 2021-10-26 | Leveling machine calibrating device that calibration accuracy is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216801172U true CN216801172U (en) | 2022-06-24 |
Family
ID=82047717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122582736.2U Expired - Fee Related CN216801172U (en) | 2021-10-26 | 2021-10-26 | Leveling machine calibrating device that calibration accuracy is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216801172U (en) |
-
2021
- 2021-10-26 CN CN202122582736.2U patent/CN216801172U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207132827U (en) | A kind of bearing roller detection means | |
| CN201917493U (en) | Material test apparatus | |
| CN216801172U (en) | Leveling machine calibrating device that calibration accuracy is high | |
| CN209886397U (en) | Steel roller abrasion on-line measuring device | |
| CN110906826B (en) | Measuring and calibrating device for aluminum product production and processing | |
| CN219935509U (en) | Building construction steel pipe intensity detection device | |
| CN103357710A (en) | Straightening and measuring machine for slender shafts | |
| CN209873069U (en) | Air knife device for hot galvanizing of strip steel | |
| KR20140006572A (en) | Large pipe length and straightness measuring device | |
| CN203349792U (en) | Section steel roller contour measuring instrument | |
| CN115255033A (en) | Servo-driven plate leveling device and leveling control method | |
| CN116182673A (en) | Odd gear addendum circle caliber | |
| CN202516887U (en) | Slender shaft straightening measurement machine | |
| CN214502335U (en) | Bevel gear shaft gear taper detection device | |
| CN209745220U (en) | Flatness measuring device | |
| CN212806856U (en) | Pipeline wall thickness measuring device | |
| CN103776412B (en) | A kind of worm and gear centre-to-centre spacing Quick Measurement lathe | |
| CN105091690B (en) | New semi automatic external thread gauge general measuring instrument | |
| CN210375044U (en) | Wall thickness measuring instrument for cylinder part | |
| CN209197710U (en) | A kind of concentricity automatic measuring unit | |
| CN218283200U (en) | Roller straightness measuring instrument | |
| CN2818059Y (en) | Vertical polished wiredrawing machine | |
| CN219899716U (en) | Automatic detection device of straightener | |
| CN211439342U (en) | Measuring tool processing, polishing and grinding device | |
| CN216558687U (en) | Manual full-replaceable shaft gear span rod distance measuring table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |