CN110586664B - Pinch roll composite roll collar and assembly method thereof - Google Patents
Pinch roll composite roll collar and assembly method thereof Download PDFInfo
- Publication number
- CN110586664B CN110586664B CN201910816427.1A CN201910816427A CN110586664B CN 110586664 B CN110586664 B CN 110586664B CN 201910816427 A CN201910816427 A CN 201910816427A CN 110586664 B CN110586664 B CN 110586664B
- Authority
- CN
- China
- Prior art keywords
- collar
- roll collar
- waste
- waste roll
- connecting ring
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 90
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009918 complex formation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
-
- 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
- B23P19/02—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 connecting objects by press fit or for detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a pinch roll composite roll collar and an assembly method thereof. The connecting ring and the waste roll collar are compounded, so that the scrapped waste roll collar is reused, the roll collar utilization rate of a steel mill is improved, and the roll collar production cost is obviously reduced; in addition, the pinch roll composite roll collar is assembled through the assembly method, so that the assembly time of the waste roll collar and the connecting collar can be shortened, and the assembly precision of the waste roll collar and the connecting collar is remarkably improved.
Description
Technical Field
The invention relates to the field of steel rolling high-speed wire production, in particular to a pinch roll composite roll collar and an assembly method thereof.
Background
The pinch roll is a key device for providing power for the rolled piece by a high-line production line of a steel mill, enabling the rolled piece to run stably, controlling the running speed of the tail part of the rolled piece and ensuring smooth spinning of the rolled piece.
At present, the roll collar used by the pinch roll is a special roll collar with phi 210, phi 94, and 71.7mm, the roll collar used by the finishing mill is a special roll collar with phi 230, phi 130, and 71.7mm, and after the roll collar is scrapped, the roll collar is directly replaced by a new roll collar, so that the consumption of the roll collar is greatly increased.
The application provides a pinch roll composite roll collar and an assembly method thereof, which can recycle the waste finishing mill roll collar onto the pinch roll collar, and reduce the consumption of new roll collars of a steel mill, thereby reducing the production cost.
Disclosure of Invention
The invention provides a pinch roll composite roll collar, an assembly device and an assembly method thereof, which can reuse the scrapped waste roll collar of a finishing mill, achieve the aim of reducing the production cost and solve the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the composite roll collar for the pinch roll comprises a waste roll collar and a connecting ring, wherein the outer circular surface of the connecting ring is connected with the inner circular surface of the waste roll collar in interference fit, and the inner circular surface of the connecting ring is used for being attached to the roll shaft surface of the pinch roll.
Preferably, the waste roll collar is made of tungsten carbide, the connecting ring is made of stainless steel, and the interference between the connecting ring and the waste roll collar is 0.04mm-0.07mm.
The assembly method of the pinch roll composite roll collar comprises the following steps:
(1) Selecting materials: selecting a waste roll collar scrapped by a finishing mill and a connecting ring with the length larger than that of the waste roll collar, measuring the inner hole size of the waste roll collar and the outer diameter size of the connecting ring, and ensuring the difference between the outer diameter size of the connecting ring and the inner diameter size of the waste roll collar to be 0.04-0.07 mm;
(2) And (3) cooling: cooling the connection ring in liquid nitrogen environment for a period of time, wherein the cooling time is not less than 5min;
(3) And (3) assembling: firstly placing the waste roll collar on an assembly device, and then taking out the connecting collar cooled in the step (2) and assembling the connecting collar with the waste roll collar, so that the connecting collar penetrates through the waste roll collar, and the two ends of the connecting collar extend out of the two ends of the waste roll collar respectively;
(4) And (3) cutting, namely mounting the connecting ring assembled in the step (4) and the waste roll collar on a machine tool, turning the connecting ring extending out of the end face part of the waste roll collar by utilizing a lathe tool, and finishing the assembly of the pinch roll by using the composite roll collar after the section of the connecting ring is flush with the end face of the waste roll collar.
Preferably, the assembling device comprises an assembling base, a groove is formed in the top of the assembling base, the distance from the center of the groove to the side wall of the groove is larger than the outer diameter of the connecting ring, and the distance from the center of the groove to the side wall of the groove is smaller than the outer diameter of the waste roll collar.
Preferably, a circular mark is arranged on the assembly base at the periphery of the groove, the center of the circular mark is the center of the groove, and the radius of the circular mark is equal to the outer diameter of the waste roll collar. And (3) in the assembly process, placing the waste roll collar on the top of the assembly base, and enabling the inner hole of the waste roll collar to correspond to the groove of the assembly base, wherein the outer edge of the waste roll collar covers the circular mark on the top of the assembly base.
Preferably, an arc limiting plate is arranged on the assembly base at the periphery of the groove, the arc center of the arc limiting plate is the center of the groove, the radius of the arc limiting plate is equal to the outer diameter of the waste roll collar, and the central angle of the arc limiting plate is smaller than 180 degrees. And (3) in the assembly process, placing the waste roll collar on the top of the assembly base, and enabling the inner hole of the waste roll collar to correspond to the groove of the assembly base, wherein the outer circular surface of the waste roll collar is attached to the inner cambered surface of the arc limiting plate.
Preferably, the groove is a circular groove.
Preferably, for the stability of the assembly base, a fixing plate can be connected to the bottom of the assembly base, and a bolt hole is formed in the fixing plate.
In step (4), when the connecting ring and the waste roll collar are assembled, and when the connecting ring is difficult to penetrate through the waste refined roll collar, the lower end of the connecting ring can be pressed into a groove of the assembly base by using the hydraulic press, and specifically, the assembly base is placed below the hydraulic press, and the connecting ring is pressed by a pressing plate fixedly connected with the output end of the hydraulic press, so that the connecting ring penetrates through the waste roll collar.
The invention adopts the structure and has the advantages that:
1. the finish rolling mill collar is worn out and becomes useless collar when being less than 205mm to the diameter, because the reduction of collar rolling intensity leads to it unable continue to use, and the diameter of pinch roll collar is equivalent with useless collar diameter, consequently, this application proposes to recycle useless collar, because pinch roll use intensity is less than the finish rolling mill collar, consequently this application adopts stainless steel go-between and useless collar complex formation can be applied to the compound collar on the pinch roll, showing reduction in steel mill manufacturing cost.
2. For the assembly of the waste roll collar and the connecting ring, the assembly method and the low-cost assembly device are provided, the assembly time of the waste roll collar and the connecting ring can be shortened, and the assembly precision of the waste roll collar and the connecting ring can be remarkably improved.
Drawings
FIG. 1 is a schematic view of a composite roll collar of the present invention;
FIG. 2 is a schematic view of an assembly device according to the present invention;
FIG. 3 is a schematic view of another mounting device used in the present invention;
fig. 4 is a schematic view of the structure of fig. 3 used in cooperation with a hydraulic pressing device.
In the figure, 1, useless roller ring, 2, go-between, 3, assembly base, 4, recess, 5, circular mark, 6, arc limiting plate, 7, fixed plate, 8, bolt hole, 9, hydraulic press, 10, clamp plate.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate or refer to an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in FIG. 1, the pinch roll composite roll collar comprises a waste roll collar 1 and a connecting ring 2, wherein the outer circular surface of the connecting ring 2 is in interference fit connection with the inner circular surface of the waste roll collar 1, and the inner circular surface of the connecting ring 2 is used for being attached to the roll shaft surface of the pinch roll. The waste roll collar 1 is made of tungsten carbide, the connecting collar 2 is made of stainless steel, and the interference between the connecting collar 2 and the waste roll collar 1 is 0.04-0.07 mm.
The assembly method of the pinch roll composite roll collar comprises the following steps:
(1) Selecting materials: selecting a waste roll collar 1 scrapped by a finishing mill and a connecting collar 2 with the length larger than the length of the waste roll collar, measuring the inner hole size of the waste roll collar 1 and the outer diameter size of the connecting collar 2, and ensuring that the difference between the outer diameter size of the connecting collar 2 and the inner diameter size of the waste roll collar 1 is 0.04-0.07 mm;
(2) And (3) cooling: the connecting ring 2 is placed in a liquid nitrogen environment for cooling, wherein the cooling time of the connecting ring 2 in the liquid nitrogen environment is not less than 5min;
(3) Placing a waste roll collar 1: firstly, placing the waste roll collar 1 on an assembling device, and then taking out the connecting collar 2 cooled in the step (2) and assembling the connecting collar with the waste roll collar 1, so that the connecting collar 2 penetrates through the waste roll collar 1, and two ends of the connecting collar 2 extend out of two ends of the waste roll collar 1 respectively;
(4) Cutting: and (3) installing the connecting ring and the waste roll collar assembled in the step (4) on a machine tool, turning the connecting ring 2 extending out of the two end face parts of the waste roll collar 1 by utilizing a lathe tool, and completing the assembly of the pinch roll by using the composite roll collar after the section of the connecting ring 2 is flush with the end face of the waste roll collar 1.
As shown in fig. 2, the assembling device in step (3) includes an assembling base 3, the top surface of the assembling base 3 is a plane, a groove 4 is formed at the top of the assembling base 3, the distance from the center of the groove to the side wall of the groove is greater than the outer diameter of the connecting ring 2, and the distance from the center of the groove to the side wall of the groove is smaller than the outer diameter of the waste roller ring 1. Wherein the groove 4 is a circular groove.
It can be appreciated that, in order to accurately place the waste roll collar 1, a circular mark 5 is provided on the assembly base 3 at the peripheral side of the groove 4, the center of the circular mark 5 is the center of the groove, and the radius of the circular mark 5 is equal to the outer diameter of the waste roll collar 1. When the waste roll collar 1 is placed, an inner hole of the waste roll collar 1 corresponds to the groove 4 of the assembly base 3, and the outer edge of the waste roll collar 1 just covers the circular mark 5 at the top of the assembly base 3.
In order to accurately place the waste roll collar 1, as shown in fig. 3, besides a circular mark setting method, an arc-shaped limiting plate 6 can be further arranged on the assembly base 3 at the periphery of the groove 4, the arc center of the arc-shaped limiting plate 6 is the center of the groove 4, the radius of the arc-shaped limiting plate 6 is equal to the outer diameter of the waste roll collar 4, and the central angle of the arc-shaped limiting plate 6 is smaller than 180 degrees, wherein when the waste roll collar 4 is placed, the inner hole of the waste roll collar 1 corresponds to the groove 4 of the assembly base 3, and the outer circular surface of the waste roll collar 4 is attached to the inner cambered surface of the arc-shaped limiting plate 6.
For the stability of the assembly base 3, a fixing plate 7 can be connected to the bottom of the assembly base 3, and a bolt hole 8 is formed in the fixing plate 7, so that the assembly base 3 can be fixed through a bolt during use.
In the step (4), when the connecting ring and the waste roll collar are assembled, and the connecting ring is difficult to penetrate through the waste roll collar, as shown in fig. 4, the lower end of the connecting ring may be pressed into the groove of the assembly base by using the hydraulic press, specifically, the assembly base is placed under the hydraulic press, and the connecting ring is pressed by the pressing plate fixedly connected with the output end of the hydraulic press, so that the connecting ring penetrates through the waste roll collar.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and are intended to fall within the scope of the invention. The present invention is not described in detail in the following, but is well known to those skilled in the art.
Claims (5)
1. The assembly method of the pinch roll composite roll collar is characterized by comprising a waste roll collar and a connecting ring, wherein the outer circular surface of the connecting ring is in interference fit connection with the inner circular surface of the waste roll collar, and the inner circular surface of the connecting ring is used for being attached to the roll shaft surface of the pinch roll; the waste roll collar is made of tungsten carbide, the connecting ring is made of stainless steel, and the interference between the connecting ring and the waste roll collar is 0.04-0.07 mm;
the method comprises the following steps:
selecting materials in the step (1): selecting a waste roll collar scrapped by a finishing mill and a connecting ring with the length larger than that of the waste roll collar, measuring the inner hole size of the waste roll collar and the outer diameter size of the connecting ring, and ensuring the difference between the outer diameter size of the connecting ring and the inner diameter size of the waste roll collar to be 0.04-0.07 mm;
and (2) cooling: placing the connecting ring in a liquid nitrogen environment for cooling for a period of time;
and (3) assembling: firstly, placing the waste roll collar on an assembly device, and then taking out the connecting collar cooled in the step (2) and assembling the connecting collar with the waste roll collar, so that the connecting collar penetrates through the waste roll collar, and the two ends of the connecting collar extend out of the two ends of the waste roll collar respectively; the assembly device comprises an assembly base, a groove is formed in the top of the assembly base, the distance from the center of the groove to the side wall of the groove is larger than the outer diameter of the connecting ring, and the distance from the center of the groove to the side wall of the groove is smaller than the outer diameter of the waste roll collar; the assembly base at the periphery of the groove is provided with a circular mark, the center of the circular mark is the center of the groove, and the radius of the circular mark is equal to the outer diameter of the waste roll collar; when in assembly, the waste roll collar is placed on the top of the assembly base, the inner hole of the waste roll collar corresponds to the groove of the assembly base, and the outer edge of the waste roll collar covers the circular mark on the top of the assembly base;
and (4) cutting, namely mounting the connecting ring and the waste roll collar assembled in the step (3) on a machine tool, turning the connecting ring extending out of the end face part of the waste roll collar by utilizing a lathe tool, and finishing the assembly of the pinch roll composite roll collar after the section of the connecting ring is flush with the end face of the waste roll collar.
2. The method for assembling the composite roll collar of the pinch roll according to claim 1, wherein the cooling time of the connecting collar in the liquid nitrogen environment is not less than 5 minutes.
3. The method for assembling the composite roll collar of the pinch roll according to claim 1, wherein an arc-shaped limiting plate is arranged on an assembling base on the periphery of the groove, the arc center of the arc-shaped limiting plate is the center of the groove, the radius of the arc-shaped limiting plate is equal to the outer diameter of the waste roll collar, and the central angle of the arc-shaped limiting plate is smaller than 180 degrees.
4. The method for assembling a composite roll collar for pinch rolls according to claim 3, wherein in the assembling step (3), the waste roll collar is placed on the top of the assembling base, the inner hole of the waste roll collar corresponds to the groove of the assembling base, and the outer circular surface of the waste roll collar is attached to the intrados of the arc limiting plate.
5. A method of assembling a pinch roll compound collar according to claim 1 or claim 3 in which the recess is a circular recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816427.1A CN110586664B (en) | 2019-08-30 | 2019-08-30 | Pinch roll composite roll collar and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816427.1A CN110586664B (en) | 2019-08-30 | 2019-08-30 | Pinch roll composite roll collar and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110586664A CN110586664A (en) | 2019-12-20 |
| CN110586664B true CN110586664B (en) | 2024-04-12 |
Family
ID=68856959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910816427.1A Active CN110586664B (en) | 2019-08-30 | 2019-08-30 | Pinch roll composite roll collar and assembly method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110586664B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843644A (en) * | 2006-04-30 | 2006-10-11 | 宣化盛龙冶金设备制造厂 | Hard alloy composite roll collar for high-speed wire production line and method for manufacturing the same |
| KR20070018567A (en) * | 2005-08-10 | 2007-02-14 | 주식회사 포스코 | Apparatus for Exchanging Ring Parts of Rolling Roll |
| CN205613837U (en) * | 2015-12-22 | 2016-10-05 | 本钢板材股份有限公司 | Utilize small roller footpath collars that condemned big roller footpath collars made |
| CN109482654A (en) * | 2018-11-23 | 2019-03-19 | 枣庄瑞兴机械制造有限公司 | For Kocks milling train composite ring and its manufacturing method |
| CN211330743U (en) * | 2019-08-30 | 2020-08-25 | 石横特钢集团有限公司 | Pinch roll composite roll collar and assembling device thereof |
-
2019
- 2019-08-30 CN CN201910816427.1A patent/CN110586664B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070018567A (en) * | 2005-08-10 | 2007-02-14 | 주식회사 포스코 | Apparatus for Exchanging Ring Parts of Rolling Roll |
| CN1843644A (en) * | 2006-04-30 | 2006-10-11 | 宣化盛龙冶金设备制造厂 | Hard alloy composite roll collar for high-speed wire production line and method for manufacturing the same |
| CN205613837U (en) * | 2015-12-22 | 2016-10-05 | 本钢板材股份有限公司 | Utilize small roller footpath collars that condemned big roller footpath collars made |
| CN109482654A (en) * | 2018-11-23 | 2019-03-19 | 枣庄瑞兴机械制造有限公司 | For Kocks milling train composite ring and its manufacturing method |
| CN211330743U (en) * | 2019-08-30 | 2020-08-25 | 石横特钢集团有限公司 | Pinch roll composite roll collar and assembling device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110586664A (en) | 2019-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104907595B (en) | The inner support swelling fixture and Cutting Process of ultra-thin-wall large-size cylinder body class cutting workpiece | |
| CN211330743U (en) | Pinch roll composite roll collar and assembling device thereof | |
| CN110586664B (en) | Pinch roll composite roll collar and assembly method thereof | |
| CN215733935U (en) | YE3 motor stator folds and presses interchangeable formula cylinder child frock that rises | |
| CN102922238A (en) | Production process of body flange | |
| CN205519183U (en) | Punch head assembly | |
| CN102489739B (en) | Method for processing multi-axis hole system of differential shell | |
| CN202278270U (en) | Gear tooth grinding positioning tool | |
| CN211464288U (en) | Buckle formula band steel ground roller | |
| CN210754362U (en) | Quick replacement mechanism of roll sleeve | |
| CN203401399U (en) | Knife handle in tapered connection with grinding head | |
| CN210359042U (en) | Ring rolling forming die of connector | |
| CN209969990U (en) | Anti-slip nicking device for roller | |
| CN210756514U (en) | Internal stay formula clamping frock | |
| CN202291698U (en) | Expansion sleeve for positioning gear grinding | |
| CN218638309U (en) | Spinning frock and spinning processing equipment of clutch hub | |
| CN213530205U (en) | Drawing die for steel wire processing | |
| CN220943775U (en) | Novel welding radial plate shaft structure | |
| CN219926512U (en) | Novel take-up and pay-off wheel and assembly structure thereof | |
| CN217412082U (en) | Rim roll forming machine main shaft | |
| CN215750093U (en) | Semiconductor slicer guide roller of simple and convenient dismantlement | |
| CN209792632U (en) | Eccentric shaft external diameter roller burnishing cutter | |
| CN215257448U (en) | Transmission device of temper mill | |
| CN111229912A (en) | Tantalum corrugated expansion joint forming device and method | |
| CN209557512U (en) | A kind of spool spindle nose flat key |
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 |