CN210968408U - Grinding machine grinding wheel mounting assembly for grinding machine - Google Patents
Grinding machine grinding wheel mounting assembly for grinding machine Download PDFInfo
- Publication number
- CN210968408U CN210968408U CN201921709176.9U CN201921709176U CN210968408U CN 210968408 U CN210968408 U CN 210968408U CN 201921709176 U CN201921709176 U CN 201921709176U CN 210968408 U CN210968408 U CN 210968408U
- Authority
- CN
- China
- Prior art keywords
- grinding machine
- grinding
- shaft section
- mounting assembly
- wheel
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 18
- 229910001651 emery Inorganic materials 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000000392 somatic effect Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model discloses a grinding machine wheel mounting assembly for grinding machine, grinding machine wheel mounting assembly includes: a mount adapted to be connected with a first shaft section of a spindle of a grinding machine, the mount comprising: a body portion and a guide portion; the guide portion is arranged on the outer peripheral surface of the body portion, the guide portion is suitable for guiding the grinding wheel of the grinding machine to a second shaft section, adjacent to the first shaft section, of the main shaft, and the cross sectional area of the guide portion is gradually increased in the direction towards the second shaft section. The grinding machine grinding wheel mounting assembly provided by the embodiment of the utility model has the advantages that by arranging the mounting part, the grinding machine grinding wheel enters the second shaft section under the guiding action of the guiding part of the mounting part so as to complete the mounting of the grinding machine grinding wheel, so that the mounting of the grinding machine grinding wheel on the main shaft is simpler and more convenient; and the collision between the grinding wheel of the grinding machine and the main shaft can be effectively avoided, the service life of the flange plate of the grinding wheel of the grinding machine is prolonged, and the service life and the precision of the main shaft are also prolonged.
Description
Technical Field
The utility model belongs to the technical field of the grinding machine manufacturing technology and specifically relates to a grinding machine emery wheel installation component for grinding machine is related to.
Background
In the production and manufacturing process of the vehicle, some parts of the vehicle need to be processed through a grinding machine, a grinding tool of the grinding machine is generally a grinding wheel, and in the processing process of the parts of the vehicle, the grinding wheel of the grinding machine belongs to a consumable part and needs to be replaced regularly.
In the related art, the grinding wheel flange plate of the grinding machine is heavy in whole weight, and the grinding wheel flange plate and the main shaft need to be completely attached during installation, so that the flange plate of the grinding wheel is easy to collide with the main shaft in the process of installing the grinding wheel of the grinding machine to the main shaft, and after collision occurs, the service lives of the main shaft and the flange plate of the grinding wheel of the grinding machine can be shortened, and the grinding precision of the grinding wheel of the grinding machine can be reduced.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a grinding machine emery wheel installation component for grinding machine, bed emery wheel installation component makes the installation of grinding machine emery wheel more convenient, simple, and when having improved the ring flange life of grinding machine emery wheel, has also improved the life and the precision of main shaft.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, grinding machine wheel mounting assembly includes: a mount adapted to be connected with a first shaft section of a spindle of a grinding machine, the mount comprising: a body portion and a guide portion; the guide portion is disposed on an outer peripheral surface of the body portion, the guide portion is adapted to guide the grinding wheel onto a second shaft section of the spindle adjacent to the first shaft section, and a cross-sectional area of the guide portion gradually increases in a direction toward the second shaft section.
According to the mounting component for the grinding machine grinding wheel of the embodiment of the utility model, the mounting component is arranged in the mounting process of the grinding machine grinding wheel, so that the grinding machine grinding wheel enters the second shaft section under the guiding action of the guiding part of the mounting component to complete the mounting of the grinding machine grinding wheel, the mounting of the grinding machine grinding wheel on the main shaft is simpler and more convenient, and the mounting efficiency of the main shaft and the grinding machine grinding wheel can be improved; and the collision between the grinding wheel of the grinding machine and the main shaft can be effectively avoided, the service life of the flange plate of the grinding wheel of the grinding machine is prolonged, and the service life and the precision of the main shaft are also prolonged.
According to the utility model discloses a grinding machine emery wheel installation component for grinding machine, the installed part still includes: a shaft section mating portion, at least a portion of an outer side wall of the shaft section mating portion being connected to the body portion, the shaft section mating portion being sleeved over the first shaft section.
According to the utility model discloses a grinding machine emery wheel installation component for grinding machine, this somatic part with the second shaft section orientation the terminal surface of installed part is laminated mutually.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, this body part orientation one side of second axle section still is provided with first boss, first boss with the main shaft is in first axle section with recess between the second axle section is laminated mutually.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, grinding machine wheel mounting assembly still includes the fastener, the fastener be suitable for with the primary shaft section is connected in order to press from both sides tightly the installed part.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, this somatic part orientation still be provided with the second boss on the terminal surface of fastener, the cross-sectional area of second boss is greater than the cross-sectional area of fastener.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, the second boss with fastener complex surface structure is the plane, and perpendicular to the axis of main shaft.
According to the utility model discloses a grinding machine emery wheel installation component for grinding machine, this somatic part is fan-shaped cylinder.
According to an embodiment of the present invention, the angle of projection of the sector cylinder in the axial direction of the main shaft is 105 to 135 °.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
figure 1 is a perspective view of a mounting member according to an embodiment of the present invention;
figure 2 is a front view of a mounting member according to an embodiment of the present invention;
fig. 3 is a left side view of a mount according to an embodiment of the present invention;
fig. 4 is a top view of a mount according to an embodiment of the invention.
Reference numerals:
the mounting member 10, the body portion 11, the guide portion 12, the first boss 13, the second boss 14, and the shaft section fitting portion 15.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A grinding machine wheel mounting assembly for a grinding machine according to an embodiment of the present invention will be described with reference to fig. 1 to 4.
As shown in fig. 1, according to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, grinding machine wheel mounting assembly includes: a mounting member 10; the mount 10 includes: a body portion 11 and a guide portion 12.
The mounting member 10 is adapted to be connected to a first shaft section of a main shaft (not shown in the drawings) of a grinding machine, that is, the mounting member 10 is sleeved on the first shaft section of the main shaft, so that the mounting member 10 and the first shaft section of the main shaft do not move in a radial direction, and the connection between the mounting member 10 and the first shaft section of the main shaft is more stable.
As shown in fig. 1, fig. 3 and fig. 4, the guide portion 12 is disposed on the outer peripheral surface of the main body portion 11, that is, the guide portion 12 is disposed along the circumferential direction of the main body portion 11, and the diameter of the first shaft section of the main shaft is smaller than that of the second shaft section of the main shaft, so that the grinding wheel is guided to the second shaft section of the main shaft from the first shaft section of the main shaft through the guide portion 12, so as to guide the grinding wheel in the installation process of the grinding wheel, thereby improving the work efficiency of the installation of the grinding wheel, and meanwhile, effectively avoiding the collision between the grinding wheel and the end surface of the second shaft section, and improving the service life of the flange of the grinding wheel and the service life and precision of the main shaft.
It can be understood that the diameter of the end of the guide part 12 facing the second shaft section is consistent with the diameter of the second shaft section, so that the end face of the second shaft section can be completely shielded, and the end face and the peripheral wall of the second shaft section are effectively prevented from being gouged in the installation process.
The mounting member 10 is suitable for mounting components on a spindle having a plurality of shaft segments, and is not limited to the mounting between a grinding wheel and a spindle of a grinding machine.
As shown in fig. 1, 3 and 4, the cross-sectional area of the guide portion 12 gradually increases in the direction toward the second shaft section, that is, the general profile of the guide portion 12 is configured as a slope, and the distance from the guide portion 12 to the axial direction of the first shaft section gradually increases in the direction toward the second shaft section, so that the grinding wheel is guided to the second shaft section along the slope and is matched with the second shaft section to complete the installation of the grinding wheel and improve the work efficiency of the installation of the grinding wheel.
The general profiles of the first shaft section and the second shaft section are both cylindrical, the diameter of the second shaft section is larger than that of the first shaft section, the first shaft section and the second shaft section are coaxially arranged, after the mounting part 10 is arranged, the grinding wheel of the grinding machine firstly penetrates through the first shaft section, and under the guiding effect of the guiding part 12 of the mounting part 10, the grinding wheel of the grinding machine enters the second shaft section.
According to the mounting component for the grinding machine grinding wheel of the embodiment of the utility model, the mounting part 10 is arranged in the mounting process of the grinding machine grinding wheel, and the grinding machine grinding wheel enters the second shaft section under the guiding action of the guiding part 12 of the mounting part 10 so as to complete the mounting of the grinding machine grinding wheel, so that the mounting of the grinding machine grinding wheel on the main shaft is simpler and more convenient, and the mounting efficiency of the main shaft and the grinding machine grinding wheel can be improved; and the collision between the grinding wheel of the grinding machine and the main shaft can be effectively avoided, the service life of the flange plate of the grinding wheel of the grinding machine is prolonged, and the service life and the precision of the main shaft are also prolonged.
As shown in fig. 1 and 2, according to a grinding machine wheel mounting assembly for a grinding machine according to an embodiment of the present invention, the mounting member 10 further includes: shaft segment mating section 15.
As shown in fig. 1 and 2, the general outline of the shaft section fitting portion 15 is configured to be cylindrical, at least a part of the outer side wall of the shaft section fitting portion 15 is connected with the body portion 11, the shaft section fitting portion 15 is connected with the body portion 11 as a whole, so that the installation of the installation member 10 on the first shaft section is more convenient, and the shaft section fitting portion 15 is sleeved on the first shaft section, so that the inner peripheral wall of the shaft section fitting portion 15 is attached to the outer peripheral wall of the first shaft section, the installation member 10 can be limited in the radial direction, the play of the installation member 10 in the radial direction is avoided, and the fixing effect of the installation member 10 and the first shaft section is enhanced.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, this body 11 laminates with the terminal surface of second shaft section orientation installed part 10 mutually, and the biggest terminal surface of this body 11 laminates with the terminal surface of second shaft section mutually promptly, makes the terminal surface of this body 11 and the terminal surface of second shaft section be face contact, avoids appearing stress concentration between this body 11 and the second shaft section, and makes being connected between the terminal surface of this body 11 and the terminal surface of second shaft section more even, stable.
In the present embodiment, an end surface of the body portion 11 facing the second shaft section is a maximum end surface of the body portion 11, and an end surface of the body portion 11 facing away from the second shaft section is a minimum end surface.
As shown in fig. 1, fig. 3 and fig. 4, according to the utility model discloses a grinding machine emery wheel installation component for grinding machine of embodiment, body 11 still is provided with first boss 13 towards one side of second shaft section, be provided with first boss 13 on the biggest terminal surface of body 11 promptly, and be provided with the recess on the terminal surface of second shaft section, first boss 13 corresponds the setting with the recess, when the biggest terminal surface of body 11 was laminated with the terminal surface of second shaft section, first boss 13 inserts the recess on the terminal surface of second shaft section, make the biggest terminal surface of body 11 laminate with the terminal surface of second shaft section, recess on first boss 13 and the terminal surface of second shaft section is laminated, in order to avoid installed part 10 to appear rotating and radially appearing the drunkenness in the axial, improve the fixed effect of installed part 10 on main shaft, make the emery wheel installation of grinding machine more accurate, stable.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine, grinding machine wheel mounting assembly still includes the fastener.
The fastener is suitable for being connected with the first shaft section to clamp the mounting part 10, namely the fastener is in fit connection with the first shaft section, so that one side of the fastener, facing the mounting part 10, is abutted against one side of the mounting part 10, facing the fastener, and the maximum end surface of the body part 11 is tightly attached to the end surface of the second shaft section, thereby avoiding the mounting part 10 from shifting and sliding in the axial direction.
Wherein, the fastener can adopt detachable fastening devices such as bolts and the like.
As shown in fig. 3 and 4, according to the grinding machine wheel mounting assembly for a grinding machine of an embodiment of the present invention, the end surface of the body 11 facing the fastener is further provided with a second boss 14, that is, the minimum end surface of the body 11 is provided with the second boss 14, the cross-sectional area of the second boss 14 is larger than that of the fastener, so that the fastener completely abuts against the second boss 14 toward one side of the mounting member 10, the second boss 14 is prevented from being concentrated in stress due to contact with the fastener, and the second boss 14 improves the matching effect of the fastener and the first shaft section.
According to the utility model discloses a grinding machine wheel mounting assembly for grinding machine of an embodiment, second boss 14 is the plane with fastener complex surface structure, the terminal surface of second boss 14 is the face contact with the terminal surface cooperation of fastener promptly, make the terminal surface of second boss 14 laminate with the terminal surface of fastener mutually, so that the effort distribution between second boss 14 and the fastener is more even, and avoid the contact of second boss 14 and fastener stress concentration to appear, and the axis of second boss 14 perpendicular to main shaft, the fastener is the axis of main shaft also perpendicular to, make the laminating between second boss 14 and the fastener not have the space, with the laminating effect between reinforcing second boss 14 and the fastener.
As shown in fig. 1 and 2, according to the grinding machine wheel mounting assembly for a grinding machine of an embodiment of the present invention, the body 11 is a fan-shaped cylinder, that is, the general outline of the body 11 is fan-shaped, so as to save the manufacturing material and cost of the body 11, and after the grinding machine wheel mounting is completed, the bus bar end faces on both sides of the fan-shaped cylinder are clamped by the clamping tool, so as to take out the mounting member 10 externally sleeved on the first shaft section, so that the mounting and dismounting of the body 11 and the main shaft are more convenient and faster, and the mounting and dismounting efficiency of the mounting member 10 is improved.
As shown in fig. 1 and 2, according to the grinding machine wheel mounting assembly for a grinding machine of an embodiment of the present invention, the projection angle of the sector cylinder in the axial direction of the main shaft is 105 ° -135 °, that is, the projection angle of the sector cylinder in the axial direction of the main shaft can be 105 °, 135 °, or any projection angle between 105 ° and 135 °, after the grinding machine wheel is mounted to the second shaft section, the mounting member 10 is easily dismounted from the main shaft, and then the fastening member is tightened, so that the mounting step of the grinding machine wheel is completely completed.
In the present embodiment, the projection angle of the sector cylinder in the axial direction is preferably 120 °.
The mounting process of the grinding wheel of the grinding machine is described below with reference to the following steps.
The first step is as follows: the shaft section matching part 15 of the mounting part 10 is sleeved on the first shaft section of the main shaft, and at least part of the first shaft section penetrates through the shaft section matching part 15, so that the maximum end face of the body part 11 is attached to the end face of the second shaft section, and the first boss 13 is matched with the groove on the end face of the second shaft section.
The second step is as follows: the fastener is fitted over the first shaft section and detachably fastened (e.g., screwed) to the first shaft section such that the side of the fastener facing the mounting member 10 abuts against the second boss 14, thereby clamping the mounting member 10 to the first shaft section via the fastener and the end surface of the second shaft section.
The third step: the flange plate of the grinding wheel of the grinding machine penetrates through the first shaft section, and under the guiding action of the guide part 12, the grinding wheel of the grinding machine gradually extends into the second shaft section along the inclined surface of the guide part 12.
The fourth step: and after the grinding wheel of the grinding machine completely extends into the second shaft section, releasing the fastening relation between the fastening piece and the first shaft section so as to finish the disassembly of the mounting piece 10.
The fifth step: after the mounting member 10 is removed, the fastener is sleeved into the first shaft section to fasten the grinding wheel.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A grinding machine wheel mounting assembly for a grinding machine, comprising: a mounting (10), the mounting (10) being adapted to be connected with a first shaft section of a main shaft of a grinding machine, the mounting (10) comprising:
a body section (11);
a guide portion (12), the guide portion (12) being disposed on an outer peripheral surface of the body portion (11), the guide portion (12) being adapted to guide the grinding wheel onto a second axial section of the spindle adjacent the first axial section, the guide portion (12) having a cross-sectional area that gradually increases in a direction toward the second axial section.
2. A grinding wheel mounting assembly for a grinding machine as claimed in claim 1, wherein said mounting member (10) further includes: a shaft section matching part (15), wherein at least part of the outer side wall of the shaft section matching part (15) is connected with the body part (11), and the shaft section matching part (15) is sleeved on the first shaft section.
3. A grinding wheel mounting assembly for a grinding machine as claimed in claim 1, characterised in that the body portion (11) abuts the end face of the second shaft section facing the mounting member (10).
4. A grinding wheel mounting assembly for a grinding machine as claimed in claim 3, characterised in that the side of the body portion (11) facing the second shaft section is further provided with a first boss (13), the first boss (13) engaging with a recess in the spindle between the first and second shaft sections.
5. A grinding wheel mounting assembly for a grinding machine as claimed in claim 1, characterised in that it further includes a fastener adapted to be connected to the first shaft section to clamp the mounting member (10).
6. A grinding wheel mounting assembly for a grinding machine as claimed in claim 5, characterised in that the end face of the body portion (11) facing the fastener is also provided with a second boss (14), the second boss (14) having a cross-sectional area greater than the cross-sectional area of the fastener.
7. A grinding wheel mounting assembly for a grinding machine as claimed in claim 6, characterised in that the surface of said second boss (14) which engages said fastener is configured to be planar and perpendicular to the axis of said spindle.
8. A grinding wheel mounting assembly for a grinding machine as claimed in any one of claims 1 to 7, characterised in that the body portion (11) is a sector cylinder.
9. A grinding machine wheel mounting assembly for a grinding machine as claimed in claim 8, wherein said sector cylinder has a projected angle in the axial direction of said spindle of 105 ° to 135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921709176.9U CN210968408U (en) | 2019-10-12 | 2019-10-12 | Grinding machine grinding wheel mounting assembly for grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921709176.9U CN210968408U (en) | 2019-10-12 | 2019-10-12 | Grinding machine grinding wheel mounting assembly for grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210968408U true CN210968408U (en) | 2020-07-10 |
Family
ID=71440502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921709176.9U Active CN210968408U (en) | 2019-10-12 | 2019-10-12 | Grinding machine grinding wheel mounting assembly for grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210968408U (en) |
-
2019
- 2019-10-12 CN CN201921709176.9U patent/CN210968408U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2280836A2 (en) | Hub and brake rotor assembly | |
| CN105904343A (en) | Quick Change Adapter For Grinding Wheels | |
| EP4054857B1 (en) | Supporting wheel for motor vehicles | |
| CN210968408U (en) | Grinding machine grinding wheel mounting assembly for grinding machine | |
| KR20190017903A (en) | Frame, frame, bicycle mounting structure of wheel axle assembly and wheel fork | |
| CN101372201A (en) | Gear box suspension cushion | |
| CN109084503B (en) | Knockout fixing device and rotary compressor | |
| KR101617163B1 (en) | Bumper beam unit for vehicle | |
| CN201544088U (en) | Drum shaft mounting structure of drum grinding and polishing machine | |
| US11878551B2 (en) | Omnidirectional wheel and scooter having omnidirectional wheel | |
| CN214135723U (en) | Auxiliary positioning device for hub assembly | |
| CN211840726U (en) | Welding jig for fixing FSAE racing steering gear | |
| CN102996687B (en) | Wagon drum brake device punching weldering base plate and moulding process thereof | |
| CN221665133U (en) | Mechanical shock absorption matching frame | |
| CN214057805U (en) | Steering mechanism mounting structure of balance car | |
| CN218312942U (en) | Universal jig for grinding wheel flanges of different grinding machines | |
| CN212046716U (en) | Aluminum alloy wheel hub | |
| CN219686962U (en) | Wear-resistant single-layer rim of electric vehicle | |
| CN210132949U (en) | Novel Mecanum wheel | |
| CN218913009U (en) | Communicating pipe assembly of vehicle and vehicle | |
| CN212736070U (en) | Main shaft fixing structure of piece arm is got to glass-cutting all-in-one | |
| CN220595120U (en) | Rotation stopping and outgoing line mounting structure of driving motor | |
| CN216929731U (en) | IPM motor installation base | |
| CN220884261U (en) | Car is with camera of backing a car convenient to installation | |
| CN215510012U (en) | End cover terminal surface and tang automatic milling are with including formula frock structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |