CN113977486B - Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method - Google Patents
Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method Download PDFInfo
- Publication number
- CN113977486B CN113977486B CN202111265573.3A CN202111265573A CN113977486B CN 113977486 B CN113977486 B CN 113977486B CN 202111265573 A CN202111265573 A CN 202111265573A CN 113977486 B CN113977486 B CN 113977486B
- Authority
- CN
- China
- Prior art keywords
- cover
- machine
- positioning
- machine body
- jackscrew
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention relates to the technical field of double-disc refiner installation, and discloses a positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc refiner. The invention has simple structure, the bolt is arranged through the positioning hole on the positioning plate, so that the random movement of the machine body and the machine cover is limited, and the positioning pin hole is positioned through the pin hole reference hole on the positioning plate, so that the positioning pin is matched with the machine body and the machine cover, and the coaxiality of the machine body and the machine cover can be effectively ensured by combining the positioning pin with the machine body and the machine cover. The assembly method includes the steps of a, machining the outer circle of the machine body and the machine cover with the axis of the mounting surface of the grinding disc as the reference; b. the positioning plate, the machine cover and the machine body are connected through bolts; c. and (3) processing the machine cover and the positioning pin holes on the machine body through the pin hole reference holes on the positioning plate, and inserting the positioning pins into the positioning pin holes.
Description
Technical Field
The invention relates to the technical field of double-disc refiner installation, in particular to a positioning mechanism for maintaining coaxiality of grinding discs of a double-disc refiner and an assembly method.
Background
At present, a double-disc pulping machine body and a machine cover in the market are assembled together through a hinge type, and hinge bases are respectively welded on the machine cover and the machine body. The hinge hole and the mandrel are in clearance fit to ensure smooth rotation of the hinge mechanism. The hinge mechanism is matched and welded on the machine body and the machine cover, and the welding deformation can cause the clamping of the mandrel to cause the difficult rotation of the machine cover.
The weight of the cover and the accessories arranged on the cover can lead the cover to deflect by taking the hinge at the upper part as the center, so that the static grinding disc of the cover and the movable grinding disc of the turntable are not coaxial, and the farther the cover is away from the hinge position, the larger the deflection distance of the cover is. In the pulping process, part of the grinding teeth do not participate in pulping, because the pulping quality is greatly related to tooth type angles formed between the dynamic grinding disc and the static grinding disc, the tooth type angles are changed due to deflection, the fiber form after pulping cannot reach the expected effect, and the pulping quality is affected.
The cover deflection can also cause dislocation of the cover and the mounting holes on the machine body at the same time, the bolts can be extruded between the mounting holes, the forced dismounting bolts can cause bolt breakage, the cover needs to be reset by means of a lifting tool or a jack, and the dismounting of the bolts is completed.
Disclosure of Invention
The invention provides a positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc pulping machine, which aims at the defects in the prior art, and the positioning mechanism can ensure that the axes of a machine body and a machine cover are consistent through a positioning plate, a positioning hole and a shaft hole reference hole.
The invention also provides an assembling method, which reduces excessive accumulated errors caused by excessive references by taking the axis of the mounting surface of the grinding disc as the reference for processing and assembling, thereby avoiding affecting the assembling accuracy.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the positioning mechanism for maintaining coaxiality of grinding sheets of the double-disc pulping machine comprises a positioning plate and a positioning pin, wherein the positioning plate is provided with a positioning hole and a pin hole reference hole, and the positioning pin is arranged in the pin hole reference hole.
Further, the positioning mechanism is arranged at the joint of the machine body and the machine cover, and a jackscrew structure for counteracting the sagging of the machine cover is arranged on one side of the machine body.
Further, the jackscrew structure include jackscrew board and jackscrew, machine lid one side be equipped with the jackscrew board, the jackscrew board on be equipped with the jackscrew, the jackscrew lower extreme conflict on the organism.
Furthermore, one side of the machine body is provided with a cover hinge seat through a bolt, and the cover hinge seat is connected with the machine cover through a mandrel.
Further, the machine body and the machine cover are respectively provided with a connecting hole, bolts are arranged in the connecting holes, and the connecting holes and the positioning holes are coaxial.
Furthermore, the cover and the machine body are provided with positioning pin holes, and the pin hole reference hole and the positioning pin hole are coaxial.
Furthermore, the section of the positioning plate is of an L-shaped structure, and the size of an inner ring at the right angle in the positioning plate is consistent with that of an outer ring of the machine body or the machine cover.
Further, a grinding disc and a rotary disc are arranged between the machine body and the machine cover, and the axis of the mounting surface of the grinding disc is consistent with the axis of the machine body and the axis of the machine cover.
The assembly method for maintaining the coaxiality of the grinding sheets of the double-disc pulping machine comprises the positioning mechanism and further comprises the following steps:
a. machining the outer circles of the machine body and the machine cover by taking the axis of the mounting surface of the grinding disc as a reference;
b. the positioning plate, the machine cover and the machine body are connected through bolts;
c. the machine cover and the positioning pin holes on the machine body are processed through the pin hole reference holes on the positioning plate, and the positioning pins are inserted into the positioning pin holes;
d. the machine cover is respectively connected with the machine cover hinge seat and the machine body;
f. after all the steps are completed, the assembly process is carried out in an assembly workshop for the double-disc refiner.
Further, a step e is arranged between the step d and the step f, and the step e is to weld a jackscrew structure on the outer circle of the cover.
The invention has the beneficial effects that:
1. the invention has simple structure, the bolt is arranged through the positioning hole on the positioning plate, so that the random movement of the machine body and the machine cover is limited, and the positioning pin hole is positioned through the pin hole reference hole on the positioning plate, so that the positioning pin is matched with the machine body and the machine cover, and the coaxiality of the machine body and the machine cover can be effectively ensured by combining the positioning pin with the machine body and the machine cover, thereby ensuring the contact effect of the grinding disc and further ensuring the pulp quality.
2. According to the invention, one end of the mandrel is connected with the shaft hole of the machine cover, the other end of the mandrel is connected with the hinge seat of the machine cover, and the hinge seat of the machine cover is connected with the machine body through the bolts.
3. According to the invention, through the jackscrew structure and the hinge mechanism, the machine cover can be effectively prevented from deflecting on the machine body, so that the bolts are prevented from being blocked in the mounting holes or the connecting holes, the positioning pins are also prevented from being blocked in the pin hole reference holes or the positioning pin holes, and the machine cover can be ensured to be smoothly opened during maintenance.
4. According to the invention, through the mounting hole and the shaft hole reference hole on the positioning mechanism, the coaxiality of the machine body and the machine cover can be ensured, and because the device uses the axis of the mounting surface of the grinding disc as the processing and assembling reference, excessive accumulated errors caused by excessive references are reduced, the coaxiality of the grinding disc is ensured, and the pulping effect is further ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a left side view of fig. 1.
Reference numerals illustrate:
1-organism, 2-cover, 3-quiet abrasive disc, 4-carousel, 5-move abrasive disc, 6-abrasive disc installation face axis, 7-locating plate, 8-mounting hole, 9-connecting hole, 10-bolt, 11-pinhole reference hole, 12-locating pin, 13-cover hinge mount, 14-dabber, 15-jackscrew board, 16-jackscrew.
Detailed Description
For a better understanding of the present invention, the present invention is further described below with reference to the accompanying drawings. It is noted that in the description of the present invention, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 and 2, the double-disc refiner comprises a machine body 1, a cover 2, a grinding disc, a rotary disc 4, a transmission shaft and the like, wherein a cover hinge seat 13 is installed on one side of the machine body 1 through a bolt 10, and the position of the cover hinge seat 13 can be adjusted without welding. The cover 2 is provided with a shaft hole for the mandrel 14 to pass through, the cover hinge base 13 is connected with the cover 2 through the mandrel 14, and the mandrel 14 and the cover hinge base 13 form a hinge mechanism, so that the cover 2 can be opened.
The cover hinge seat 13 is connected with the machine body 1 through the bolts 10, so that the structure is simple, the operation is convenient, the non-concentricity of a hinge shaft hole caused by welding deformation can be avoided, and the rotating difficulty of the turntable 4 caused by clamping of the mandrel 14 is prevented.
The machine body 1 and the machine cover 2 are provided with a grinding disc and a rotary disc 4, the grinding disc comprises a static grinding disc 3 and a movable grinding disc 5, and the axis 6 of the mounting surface of the grinding disc is consistent with the axes of the machine body 1 and the machine cover 2.
The cover 2 and the machine body 1 are processed to be the same size by taking the grinding disc mounting surface axis 6 as a reference, and the dimensional tolerance levels are the same. The grinding disc mounting surface axis 66 is used as a processing and assembling reference, so that excessive accumulated errors caused by excessive references are reduced, and the accuracy of subsequent assembly is improved.
In order to maintain coaxiality of the grinding disc, a positioning mechanism is further arranged between the cover 2 and the machine body 1, and the positioning mechanism comprises a positioning plate 7 and a positioning pin 12. The positioning mechanisms are at least three, and are uniformly distributed on the outer sides of the cover 2 and the machine body 1.
The locating plate 7 is of an arc-shaped structure matched with the outer circle of the machine cover 2, the section of the locating plate 7 is of an L-shaped structure, and the size of an inner ring at the right angle in the locating plate is consistent with the size of an outer ring of the machine body 1 or the machine cover 2.
The positioning plate 7 is provided with a positioning hole and a pin hole reference hole 11, the cover 2 and the machine body 1 are provided with positioning pin holes according to the pin hole reference hole 11, and the pin hole reference hole 11 and the positioning pin hole are coaxial.
The pin hole reference hole 11 and the positioning pin hole are internally provided with the positioning pin 12, and the positioning pin 12 is arranged in the positioning pin hole so as to ensure that the cover 2 cannot deflect and ensure the coaxiality of the grinding disc.
The positioning pin holes on the cover 2 and the machine body 1 can be one or more according to actual requirements, and the actual requirements can be met. The positioning of the cover 2 and the body 1 is not limited to the positioning pin 12, and may be replaced by a member having the same function such as the hole-reaming bolt 10.
The machine body 1 and the machine cover 2 are respectively provided with a connecting hole 9, bolts 10 are arranged in the connecting holes 9, and the connecting holes 9 and the positioning holes are coaxial.
When in use, the mounting holes 8 of the positioning plate 7 are aligned with the connecting holes 9 on the machine body 1 and the machine cover 2, so that the bolts 10 sequentially penetrate through the mounting holes 8 and the connecting holes 9, and the positioning plate 7, the machine body 1 and the machine cover 2 are connected together. And then, processing the positioning pin holes on the machine body 1 and the machine cover 2 through the pin hole reference holes 11 on the positioning plate 7, and internally installing the positioning pins 12 after the positioning pin holes are processed.
The locating plate 7 is matched with the bolts 10 on the locating plate, so that the movement of the machine body 1 and the machine cover 2 can be limited in multiple directions, and the coaxiality of the machine body 1 and the machine cover 2 can be always ensured by matching with the locating pin 12, so that smooth use is ensured.
Example 2
On the basis of embodiment 1, the assembly method for maintaining coaxiality of grinding sheets of the double-disc refiner comprises the positioning mechanism and further comprises the following steps:
a. the outer circles of the machine body 1 and the machine cover 2 are machined by taking the axis 6 of the mounting surface of the grinding disc as a reference, so that the same dimensional tolerance level is ensured.
b. The locating plate 7, the machine cover 2 and the machine body 1 are connected through the bolts 10, more than three locating plates 7 are adopted during installation, the locating plates 7 are evenly distributed along the outer edge of the machine cover 2, the inner wall of the locating plates 7 is guaranteed to be completely attached to the outer circle of the machine body 1, and at the moment, the bolts 10 sequentially penetrate through the mounting holes 8 and the connecting holes 9 to connect the locating plates 7, the machine cover 2 and the machine body 1 together. In addition, the bolts 10 are passed through the connection holes 9 where the positioning plates 7 are not fitted.
The plurality of positioning plates 7 can ensure that the positions of the cover 2 and the machine body 1 are not deviated in any direction, and the coaxiality requirement is always maintained.
c. The locating pin 12 is inserted into the locating pin hole by processing the locating pin hole on the cover 2 and the machine body 1 through the pin hole reference hole 11 on the locating plate 7. The locating pin 12 is installed in the locating pin hole to guarantee that the cover 2 can not deflect, guarantee the axiality of abrasive disc.
d. The cover 2 is connected with the cover hinge base 13 and the cover hinge base 13 is connected with the machine body 1 respectively. The mandrel 14 respectively passes through the shaft hole on the cover 2 and the shaft hole on the cover hinge base 13, the position of the cover hinge base 13 on the machine body 1 is adjusted, and the cover hinge base 13 and the machine body 1 are connected together by using the bolt 10.
f. After all the steps are completed, the assembly process is carried out in an assembly workshop for the double-disc refiner.
Example 3
On the basis of the embodiment 2, a jackscrew 16 structure for counteracting the sagging of the cover 2 is arranged on one side of the machine body 1. The jackscrew 16 structure is located the opposite side of hinge mechanism, through the setting of jackscrew 16 mechanism, dismantles bolt 10 and locating pin 12 that is connected with organism 1 on the convenient maintenance lid 2.
The jackscrew 16 structure include jackscrew board 15 and jackscrew 16, lid 2 one side be equipped with jackscrew board 15, jackscrew board 15 on be equipped with jackscrew 16, jackscrew 16 lower extreme conflict on organism 1, jackscrew 16 lower extreme conflict is on organism 1, jackscrew 16 is not connected with organism 1.
Step e is arranged between the step d and the step f, and the step e is to weld a jackscrew 16 structure on the outer circle of the cover 2. The jackscrew 16 is configured to counteract sagging of the cover 2 when sagging of the cover 2 occurs.
If the cover 2 has a sagging phenomenon, the sagging of the cover 2 clamps the positioning pin 12 in the positioning pin hole, and the cover 2 is opened with time and labor waste. At this time, the jackscrew 16 is rotated first, and the jackscrew 16 moves downward along the jackscrew plate 15, so that the distance between the jackscrew plate 15 and the machine body 1 in the vertical direction increases, thereby jacking up the machine cover 2, releasing the clamping state of the positioning pin 12 and the positioning pin hole, and then removing the bolt 10 and the positioning pin 12. Finally, the jackscrew 16 is reversely moved, so that a gap is arranged between the jackscrew 16 and the machine body 1, and the machine cover 2 is conveniently opened.
Claims (6)
1. The positioning mechanism for maintaining the coaxiality of the grinding disc of the double-disc pulping machine comprises a positioning plate and a positioning pin, and is characterized in that a positioning hole and a pin hole reference hole are formed in the positioning plate, and the positioning pin is arranged in the pin hole reference hole; one side of the machine body is provided with a cover hinge seat through a bolt, and the cover hinge seat is connected with the machine cover through a mandrel; the positioning mechanism is arranged at the joint of the machine body and the machine cover, and a jackscrew structure for counteracting the sagging of the machine cover is arranged on one side of the machine body away from the hinge seat of the machine cover; the jackscrew structure comprises a jackscrew plate and jackscrews, wherein the jackscrew plate is arranged on one side of the machine cover, jackscrews are arranged on the jackscrew plate, and the lower ends of the jackscrews are abutted against the machine body; the assembly method for maintaining the coaxiality of the grinding sheets of the double-disc pulping machine by utilizing the positioning mechanism comprises the steps of rotating the jackscrew firstly when the machine cover has a sagging phenomenon, and enabling the jackscrew to move downwards along the jackscrew plate, so that the distance between the jackscrew plate and the machine body in the vertical direction is increased, and the machine cover is jacked.
2. The positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc refiner according to claim 1, wherein the machine body and the cover are respectively provided with a connecting hole, bolts are arranged in the connecting holes, and the connecting holes and the positioning holes are coaxial.
3. The positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc refiner according to claim 2, wherein the cover and the machine body are provided with positioning pin holes, and the pin hole reference hole is coaxial with the positioning pin hole.
4. A positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc refiner according to claim 3, wherein the section of the positioning plate is of an L-shaped structure, and the inner ring size at the inner right angle is consistent with the outer ring size of the machine body or the cover.
5. The positioning mechanism for maintaining coaxiality of grinding sheets of a double-disc refiner according to claim 4, wherein the grinding sheets and the rotary disc are arranged between the machine body and the machine cover, and the axis of the mounting surface of the grinding sheets is consistent with the axis of the machine body and the machine cover.
6. Method for assembling a twin-disc refiner maintaining coaxiality of the refiner plates, comprising a positioning mechanism according to any one of claims 1-5, characterized in that it comprises the further step of,
a. machining the outer circles of the machine body and the machine cover by taking the axis of the mounting surface of the grinding disc as a reference;
b. the positioning plate, the machine cover and the machine body are connected through bolts;
c. the machine cover and the positioning pin holes on the machine body are processed through the pin hole reference holes on the positioning plate, and the positioning pins are inserted into the positioning pin holes;
d. the machine cover is respectively connected with the machine cover hinge seat and the machine body;
e. a jackscrew structure is welded on the outer circle of the cover;
f. after all the steps are completed, the assembly process is carried out in an assembly workshop for the double-disc refiner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265573.3A CN113977486B (en) | 2021-10-28 | 2021-10-28 | Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265573.3A CN113977486B (en) | 2021-10-28 | 2021-10-28 | Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113977486A CN113977486A (en) | 2022-01-28 |
| CN113977486B true CN113977486B (en) | 2023-10-20 |
Family
ID=79743731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111265573.3A Active CN113977486B (en) | 2021-10-28 | 2021-10-28 | Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113977486B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202240424U (en) * | 2011-07-29 | 2012-05-30 | 浙江吉润汽车有限公司 | Positioning device for installing clutch plate |
| CN204546366U (en) * | 2015-04-24 | 2015-08-12 | 雄邦压铸（南通）有限公司 | Steering box lid positioner |
| CN106695316A (en) * | 2015-11-18 | 2017-05-24 | 中电华创电力技术研究有限公司 | Guide pipe flange centering device |
| CN107356368A (en) * | 2017-07-10 | 2017-11-17 | 蚌埠日月仪器研究所有限公司 | Axial pin type pull pressure sensor calibration tool |
| CN206986539U (en) * | 2017-05-04 | 2018-02-09 | 浙江同创电器有限公司 | A kind of multi-functional cover plate for washing machine |
| CN207463388U (en) * | 2017-11-09 | 2018-06-08 | 山东力诺制药有限公司 | A kind of efficient pharmaceutical raw material pulverizer |
| CN207905564U (en) * | 2017-12-28 | 2018-09-25 | 北京长城华冠汽车技术开发有限公司 | A kind of pedestrian protecting conquassation hinge |
| CN109909713A (en) * | 2019-03-27 | 2019-06-21 | 青岛威奥轨道股份有限公司 | A kind of pressing sleeve tool to center |
| CN110340639A (en) * | 2019-07-29 | 2019-10-18 | 中国船舶重工集团公司第七0七研究所 | A kind of self-centering assembly device of axis hole high-precision |
| CN110587500A (en) * | 2019-09-10 | 2019-12-20 | 东北石油大学 | Axial mortise lock type grinding and polishing disc of metallographic grinding and polishing machine |
| CN111571168A (en) * | 2020-05-25 | 2020-08-25 | 郑州磊展科技造纸机械有限公司 | Method and tool for assembling grinding shell and grinding cover of double-disc pulping machine in interchangeable welding and centering manner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001260065A (en) * | 2000-03-17 | 2001-09-25 | Advantest Corp | Parts retainer |
| US20090064836A1 (en) * | 2007-09-10 | 2009-03-12 | Bor-Yann Chuang | Quickly assembled and disassembled protective cover for a table sawing machine |
-
2021
- 2021-10-28 CN CN202111265573.3A patent/CN113977486B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202240424U (en) * | 2011-07-29 | 2012-05-30 | 浙江吉润汽车有限公司 | Positioning device for installing clutch plate |
| CN204546366U (en) * | 2015-04-24 | 2015-08-12 | 雄邦压铸（南通）有限公司 | Steering box lid positioner |
| CN106695316A (en) * | 2015-11-18 | 2017-05-24 | 中电华创电力技术研究有限公司 | Guide pipe flange centering device |
| CN206986539U (en) * | 2017-05-04 | 2018-02-09 | 浙江同创电器有限公司 | A kind of multi-functional cover plate for washing machine |
| CN107356368A (en) * | 2017-07-10 | 2017-11-17 | 蚌埠日月仪器研究所有限公司 | Axial pin type pull pressure sensor calibration tool |
| CN207463388U (en) * | 2017-11-09 | 2018-06-08 | 山东力诺制药有限公司 | A kind of efficient pharmaceutical raw material pulverizer |
| CN207905564U (en) * | 2017-12-28 | 2018-09-25 | 北京长城华冠汽车技术开发有限公司 | A kind of pedestrian protecting conquassation hinge |
| CN109909713A (en) * | 2019-03-27 | 2019-06-21 | 青岛威奥轨道股份有限公司 | A kind of pressing sleeve tool to center |
| CN110340639A (en) * | 2019-07-29 | 2019-10-18 | 中国船舶重工集团公司第七0七研究所 | A kind of self-centering assembly device of axis hole high-precision |
| CN110587500A (en) * | 2019-09-10 | 2019-12-20 | 东北石油大学 | Axial mortise lock type grinding and polishing disc of metallographic grinding and polishing machine |
| CN111571168A (en) * | 2020-05-25 | 2020-08-25 | 郑州磊展科技造纸机械有限公司 | Method and tool for assembling grinding shell and grinding cover of double-disc pulping machine in interchangeable welding and centering manner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113977486A (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1269873A (en) | Weld fixture mounting method and apparatus | |
| CN109571075B (en) | Workpiece clamp with adjustable angle for numerical control machine tool | |
| CA2193071A1 (en) | Fixturing system for machining workpiece surfaces parallel | |
| CN113977486B (en) | Positioning mechanism for maintaining coaxiality of grinding sheets of double-disc pulping machine and assembling method | |
| CN113211357B (en) | Positioning carrier | |
| CN109323643B (en) | Rapid detection device and method for blade profile of blisk subjected to electrolytic rough machining | |
| CN111060054B (en) | Main speed reducer pad selection equipment and method | |
| US4713873A (en) | Weld fixture mounting method | |
| CN216829744U (en) | Rotary tool device for machining grab bucket mechanism | |
| CN219233792U (en) | Metal barrel machining device with guide effect | |
| CN112025357A (en) | Bearing cap fixing device | |
| JP5641948B2 (en) | Posture stabilizer and tube processing method | |
| CN214770584U (en) | Fixing device for machining underframe of crane | |
| CN219254158U (en) | Vertical roll turning positioning device and turning machine tool | |
| CN220910201U (en) | Connecting loop for positioning hexagonal flange nut, hexagonal flange nut connecting assembly and workpiece connecting structure based on connecting assembly | |
| CN220921584U (en) | Clamp structure for positioning in clearance | |
| CN218460974U (en) | Universal hole multi-angle double-key-groove machining and positioning device | |
| CN220761091U (en) | Drilling jig tool for non-uniform holes of shaft pipe flange plate | |
| CN218639488U (en) | Pin hole type mistake proofing tool | |
| CN220217516U (en) | Positioning device for workpiece end face machining | |
| CN216576640U (en) | Height-adjustable supporting device | |
| CN117140353B (en) | Cross axle grinds terminal surface positioner | |
| CN110605589A (en) | Positioning jig, combination of positioning jig and multi-axis machining machine and positioning precision detection method | |
| CN221159417U (en) | Stress ring machining center clamp | |
| CN213532307U (en) | Universal four-axis positioning device for multiple devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |