CN114211387A - Precision grinding and polishing tool for large-size laser gyroscope cavity surface mounting - Google Patents
Precision grinding and polishing tool for large-size laser gyroscope cavity surface mounting Download PDFInfo
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- CN114211387A CN114211387A CN202111430881.7A CN202111430881A CN114211387A CN 114211387 A CN114211387 A CN 114211387A CN 202111430881 A CN202111430881 A CN 202111430881A CN 114211387 A CN114211387 A CN 114211387A
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- upper plate
- adjusting
- nut
- size laser
- polishing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The application discloses accurate grinding and polishing frock of jumbo size laser gyro cavity paster face for fixed and regulation are waited to grind the polishing work piece, are equipped with top surface and bottom surface on the accurate grinding and polishing frock of jumbo size laser gyro cavity paster face, and jumbo size laser gyro cavity paster face accurate grinding and polishing frock includes: the first adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a first direction; the second adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a second direction; the third adjusting component is used for adjusting the pitch angle between the top surface and the bottom surface; the first direction is perpendicular to the second direction, and the first direction and the second direction are respectively parallel to the top surface.
Description
Technical Field
The invention belongs to the field of manufacturing of precision optical parts, and particularly relates to a precision grinding and polishing tool for a large-size laser gyroscope cavity surface mount.
Background
A laser gyroscope is an angular measuring instrument that can accurately determine the orientation of a moving object. The accuracy of the surface of the laser gyro cavity patch is a key index for ensuring the design accuracy of the gyro. The grinding and polishing tool aims at various problems of precise grinding and polishing of the surface of a large-size laser gyroscope cavity patch, such as excessive grinding and polishing of a workpiece to be ground and polished, and the problems of dimension, angle out-of-tolerance, surface defects, surface shape precision guarantee and the like of the conventional grinding and polishing tool.
Disclosure of Invention
In view of the above defects or shortcomings in the prior art, it is desirable to provide a large-size laser gyroscope cavity patch surface precision grinding and polishing tool which is convenient to adjust and high in processing precision.
The specific technical scheme is as follows:
the application provides a can treat that the polishing work piece that grinds carries out the precision lapping polishing's of jumbo size laser gyroscope cavity paster face precision lapping polishing frock for the polishing work piece is treated with the regulation to fixed and adjust, be equipped with top surface and bottom surface on the precision lapping polishing frock of jumbo size laser gyroscope cavity paster face, the precision lapping polishing frock of jumbo size laser gyroscope cavity paster face includes:
the first adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a first direction;
the second adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a second direction;
a third adjustment assembly for adjusting a pitch angle between the top surface and the bottom surface;
the first direction is perpendicular to the second direction, and the first direction and the second direction are parallel to the top surface respectively.
Further, the third adjustment assembly includes:
the upper plate is used for fixing a workpiece to be ground and polished;
the lower plate is arranged below the upper plate;
the upper jacking nut is in threaded fit with the upper plate and is used for upwards supporting the upper plate;
a pull-down nut in threaded engagement with the lower plate for pulling the upper plate downward.
Further, the first adjustment assembly includes:
the sliding connection structure along the first direction is formed between the sliding support block and the upper plate, the upper surface of the sliding support block is used for bearing a workpiece to be ground and polished, and a first through hole is formed in the sliding support block;
the first fixing nut penetrates through the first through hole and is in threaded connection with the upper plate;
when the first fixing nut is loosened, relative sliding can occur between the sliding support block and the upper plate;
when the first fixing nut is tightened, the slide support block is fixed to the upper plate.
Further, the second adjustment assembly includes:
the fixed baffle is fixed on the upper plate and is used for propping against the side surface of the workpiece to be ground and polished;
the movable baffle is provided with a second through hole;
the second fixing nut penetrates through the second through hole and is in threaded connection with the upper plate;
when the second fixing nut is loosened, the movable baffle plate can slide relative to the upper plate along the second direction;
when the second fixing nut is tightened, the relative position between the moving barrier and the upper plate is locked.
Further, the second adjusting component further comprises a jacking nut, and the jacking nut is in threaded fit with the movable baffle and is used for jacking the workpiece to be ground and polished on the fixed baffle.
Further, the third adjusting assembly further comprises an elastic connecting piece, and the elastic connecting piece is used for connecting the upper plate and the lower plate.
Further, the number of the sliding support blocks is two, a set included angle is formed on the upper surfaces of the two sliding support blocks, and the set included angle is larger than 0 degree and smaller than 180 degrees.
Furthermore, each pair of the top nuts and the pull-down nuts is symmetrically distributed relative to the center of the upper plate.
The beneficial effect of this application lies in:
the first adjusting component on the large-size laser gyroscope cavity patch surface precision grinding and polishing tool is used for adjusting the position of the workpiece to be ground and polished along a first direction; the second adjusting component is used for adjusting the position of the workpiece to be ground and polished along a second direction; and the first direction is perpendicular to the second direction, and the first direction and the second direction are respectively parallel to the top surface, so that after the workpiece to be ground and polished is fixed on the device, the relative position of the workpiece to be ground and polished on the top surface of the device can be adjusted by adjusting the first adjusting assembly and/or the second adjusting assembly. In addition, the device is also provided with a third adjusting component for adjusting the pitching angle between the top surface and the bottom surface, so that grinding and polishing can be carried out on each position on the ground and polished surface of the workpiece to be ground and polished on the premise of not adjusting the grinding and polishing device, and the precision of grinding and polishing is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a front cross-sectional view of a precision grinding and polishing tool for a large-size laser gyroscope cavity surface mount;
FIG. 2 is a top view of the precision grinding and polishing tool for the wafer surface of the large-size laser gyro cavity in FIG. 1;
FIG. 3 is a side sectional view of a third adjusting component in the precision grinding and polishing tool for the wafer surface of the large-size laser gyro cavity in FIG. 1;
reference numbers in the figures: 31, an upper plate; 32, a lower plate; 33, a top nut is arranged; 34, a pull-down nut; 11, sliding the supporting block; 110, a first via; 12, a first fixing nut; 21, fixing a baffle plate; 22, moving the baffle; 220, a second through hole; 23, a second fixing nut; 24, tightening the nut; 35, an elastic connecting piece.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment provides a precision grinding and polishing frock of jumbo size laser gyroscope cavity paster face for fixed and regulation treat the grinding and polishing work piece, be equipped with top surface and bottom surface on the precision grinding and polishing frock of jumbo size laser gyroscope cavity paster face, precision grinding and polishing frock of jumbo size laser gyroscope cavity paster face includes:
the first adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a first direction;
the second adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a second direction;
a third adjustment assembly for adjusting a pitch angle between the top surface and the bottom surface;
the first direction is perpendicular to the second direction, and the first direction and the second direction are parallel to the top surface respectively.
The first adjusting component on the large-size laser gyroscope cavity patch surface precision grinding and polishing tool is used for adjusting the position of the workpiece to be ground and polished along a first direction; the second adjusting component is used for adjusting the position of the workpiece to be ground and polished along a second direction; and the first direction is perpendicular to the second direction, and the first direction and the second direction are respectively parallel to the top surface, so that after the workpiece to be ground and polished is fixed on the device, the relative position of the workpiece to be ground and polished on the top surface of the device can be adjusted by adjusting the first adjusting assembly and/or the second adjusting assembly. In addition, the device is also provided with a third adjusting component for adjusting the pitching angle between the top surface and the bottom surface, so that grinding and polishing can be carried out on each position on the surface, subjected to grinding and polishing, of the workpiece to be ground and polished on the premise of not adjusting the grinding and polishing device, and the precision of grinding and polishing is improved.
Wherein in a preferred embodiment of the third adjustment assembly, the third adjustment assembly comprises:
an upper plate 31 for fixing a workpiece to be ground and polished;
a lower plate 32, the lower plate 32 being provided below the upper plate 31;
the upper jacking nut 33 is in threaded fit with the upper plate 31 and used for upwards jacking the upper plate 31;
a pull-down nut 34, said pull-down nut 34 being screw-engaged with said lower plate 32 for pulling down said upper plate 31;
as shown in fig. 3, since the upper top nut 33 is screw-fitted to the upper plate 31 and the lower pull nut 34 is screw-fitted to the lower plate 32, when the upper top nut 33 is screwed, the lower end of the upper top nut 33 abuts against the lower plate 32, and thus the upper plate 31 can be lifted up thereat; when the pull-down nut 34 is screwed, the upper end of the pull-down nut 34 abuts against the upper plate 31, and thus the upper plate 31 can be pulled downward thereat. In conclusion, the third adjusting component can adjust the orientation of the workpiece to be ground and polished.
Wherein in a preferred embodiment of the first adjustment assembly, the first adjustment assembly comprises:
a sliding connection structure along the first direction is formed between the sliding support block 11 and the upper plate 31, the upper surface of the sliding support block 11 is used for bearing a workpiece to be ground and polished, and a first through hole 110 is formed in the sliding support block 11;
a first fixing nut 12, wherein the first fixing nut 12 is threaded with the upper plate 31 through the first through hole 110;
when the first fixing nut 12 is loosened, relative sliding between the sliding support block 11 and the upper plate 31 can occur;
when the first fixing nut 12 is tightened, the slide support block 12 is fixed to the upper plate 31.
As shown in fig. 1, since a sliding connection structure along the first direction is formed between the sliding support block 11 and the upper plate 31, a first through hole 110 is formed in the sliding support block 11, and the first fixing nut 12 is threaded to the upper plate 31 through the first through hole 110, when the first fixing nut 12 is loosened, the sliding support block 11 can relatively slide on the upper plate 31 along the first direction, and when the first fixing nut 12 is tightened, the sliding support block 12 is fixed on the upper plate 31. Therefore, the first adjusting component can adjust the position of the workpiece to be ground and polished, which is borne by the upper surface of the sliding supporting block 11, along the first direction.
Wherein in a preferred embodiment of the second adjustment assembly, the second adjustment assembly comprises:
the fixed baffle 21 is fixed on the upper plate 31 and used for propping against the side surface of the workpiece to be ground and polished;
the movable baffle 22 is provided with a second through hole 220 on the movable baffle 22;
the second fixing nut 23 penetrates through the second through hole 220 to be in threaded connection with the upper plate 31;
when the second fixing nut 23 is loosened, the moving barrier 22 can slide relatively to the upper plate 31 along the second direction;
when the second fixing nut 23 is tightened, the relative position between the moving shutter 22 and the upper plate 31 is locked.
As shown in fig. 2, since the workpiece to be ground and polished is fixed between the fixed baffle 21 and the movable baffle 22, the fixed baffle 21 is fixed on the upper plate 31, when the second fixing nut 23 is loosened, the movable baffle 22 can slide relatively to the upper plate 31 along the second direction, and when the movable baffle 22 slides along the second direction, a flat gasket can be inserted between the workpiece to be ground and polished and the fixed baffle 21, so that the second adjusting assembly can adjust the position of the workpiece to be ground and polished along the second direction.
In the preferred embodiment of the second adjusting assembly, the second adjusting assembly further comprises a tightening nut 24, and the tightening nut 24 is in threaded fit with the movable baffle 22 and is used for pressing the workpiece to be ground and polished against the fixed baffle 21.
As shown in fig. 2, since the tightening nut 24 is in threaded fit with the movable baffle 22, after the tightening nut 24 is tightened, the bottom end of the tightening nut 24 can abut against the workpiece to be ground and polished, so that the workpiece to be ground and polished is fixed between the fixed baffle 21 and the movable baffle 22 more firmly, which is beneficial to improving the grinding precision.
Wherein in a preferred embodiment of the third adjustment assembly, the third adjustment assembly further comprises an elastic connection member 35, the elastic connection member 35 being used for connecting the upper plate 31 and the lower plate 32.
As shown in fig. 3, since the elastic connection member 35 is connected between the upper plate 31 and the lower plate 32, the elastic connection member 35 may serve to maintain the stability of the apparatus when the bottom end of the upper top nut 33 does not contact the lower plate 32 and the top end of the lower pull nut 34 does not abut the upper plate 31.
In a preferred embodiment of the sliding support blocks 11, there are two sliding support blocks 11, and a set included angle is formed on the upper surfaces of the two sliding support blocks 11, and the set included angle is greater than 0 ° and less than 180 °.
As shown in fig. 1, two sliding support blocks 11 are arranged on the upper plate 31, and a set included angle is formed on the upper surfaces of the two sliding support blocks 11, the set included angle is greater than 0 ° and smaller than 180 °, and the upper surfaces of the two sliding support blocks 11 can better fit the shape of the workpiece to be ground and polished. Meanwhile, when the two sliding support blocks 11 are adjusted reversely or oppositely, the relative height of the workpiece to be ground and polished can be changed.
In the preferred embodiment where the top nuts 33 and the bottom nuts 34 are disposed, there is a pair of top nuts 33 and bottom nuts 34, and each pair of top nuts 33 or bottom nuts 34 is symmetrically disposed with respect to the center of the upper plate 31.
As shown in fig. 2, when the top end of the pull-down nut 34 is not abutted against the upper plate 31, the upper plate 31 is supported only by the upper top nuts 33, and the two upper top nuts 33 are symmetrically distributed with respect to the center of the upper plate 31, so that the structure is more stable; when the bottom end of the upper top nut 33 is not abutted to the lower plate 32, the two pull-down nuts 34 are symmetrically distributed with respect to the center of the upper plate 31 by only pulling the upper plate 31 by the pull-down nuts 34, and the structure is more stable.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. The utility model provides a jumbo size laser gyroscope cavity paster face precision grinding and polishing frock for fixed and regulation treat the grinding and polishing work piece, its characterized in that, be equipped with top surface and bottom surface on the jumbo size laser gyroscope cavity paster face precision grinding and polishing frock, jumbo size laser gyroscope cavity paster face precision grinding and polishing frock includes:
the first adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a first direction;
the second adjusting assembly is used for adjusting the position of the workpiece to be ground and polished along a second direction;
a third adjustment assembly for adjusting a pitch angle between the top surface and the bottom surface;
the first direction is perpendicular to the second direction, and the first direction and the second direction are parallel to the top surface respectively.
2. The precision grinding and polishing tool for the cavity patch surface of the large-size laser gyroscope according to claim 1, wherein the third adjusting component comprises:
the upper plate (31) is used for fixing a workpiece to be ground and polished;
a lower plate (32), wherein the lower plate (32) is arranged below the upper plate (31);
an upper top nut (33), the upper top nut (33) being in threaded engagement with the upper plate (31) for upwardly supporting the upper plate (31);
a pull-down nut (34), the pull-down nut (34) being screw-fitted with the lower plate (32) for pulling down the upper plate (31).
3. The precision grinding and polishing tool for the cavity patch surface of the large-size laser gyroscope according to claim 2, wherein the first adjusting component comprises:
a sliding connection structure along the first direction is formed between the sliding support block (11) and the upper plate (31), the upper surface of the sliding support block (11) is used for bearing a workpiece to be ground and polished, and a first through hole (110) is formed in the sliding support block (11);
a first fixing nut (12), wherein the first fixing nut (12) penetrates through the first through hole (110) to be in threaded connection with the upper plate (31);
when the first fixing nut (12) is loosened, relative sliding can occur between the sliding support block (11) and the upper plate (31);
when the first fixing nut (12) is tightened, the slide support block (12) is fixed to the upper plate (31).
4. The precision grinding and polishing tool for the cavity patch surface of the large-size laser gyroscope according to claim 2, wherein the second adjusting component comprises:
the fixed baffle (21), the said fixed baffle (21) is fixed on said upper plate (31), is used for propping up and waiting to grind the side of the polishing work piece;
the movable baffle (22), the movable baffle (22) is provided with a second through hole (220);
a second fixing nut (23), wherein the second fixing nut (23) penetrates through the second through hole (220) to be in threaded connection with the upper plate (31);
when the second fixing nut (23) is loosened, the movable baffle plate (22) can slide relatively to the upper plate (31) along the second direction;
when the second fixing nut (23) is tightened, the relative position between the moving shutter (22) and the upper plate (31) is locked.
5. The large-size laser gyro cavity patch surface precision grinding and polishing tool according to claim 4, wherein the second adjusting assembly further comprises a tightening nut (24), and the tightening nut (24) is in threaded fit with the movable baffle (22) and is used for pressing a workpiece to be ground and polished on the fixed baffle (21).
6. The precise grinding and polishing tool for the cavity patch surface of the large-size laser gyroscope according to claim 2, wherein the third adjusting assembly further comprises an elastic connecting piece (35), and the elastic connecting piece (35) is used for connecting the upper plate (31) and the lower plate (32).
7. The precise grinding and polishing tool for the cavity patch surface of the large-size laser gyroscope according to claim 3, wherein the number of the sliding support blocks (11) is two, and a set included angle is formed on the upper surfaces of the two sliding support blocks (11), and the set included angle is greater than 0 ° and less than 180 °.
8. The large-size laser gyro cavity patch surface precision grinding and polishing tool according to any one of claims 2 to 7, wherein a pair of the top nuts (33) and the pull-down nuts (34) are provided, and each pair of the top nuts (33) or the pull-down nuts (34) is symmetrically distributed relative to the center of the upper plate (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430881.7A CN114211387A (en) | 2021-11-29 | 2021-11-29 | Precision grinding and polishing tool for large-size laser gyroscope cavity surface mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430881.7A CN114211387A (en) | 2021-11-29 | 2021-11-29 | Precision grinding and polishing tool for large-size laser gyroscope cavity surface mounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114211387A true CN114211387A (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111430881.7A Pending CN114211387A (en) | 2021-11-29 | 2021-11-29 | Precision grinding and polishing tool for large-size laser gyroscope cavity surface mounting |
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|---|---|
| CN (1) | CN114211387A (en) |
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| DE8519766U1 (en) * | 1985-07-09 | 1986-11-06 | Werkzeugmaschinenfabrik Adolf Waldrich Coburg Gmbh & Co, 8630 Coburg | Gripping device |
| CN202607355U (en) * | 2012-05-15 | 2012-12-19 | 中国航天科工集团第三研究院第八三五八研究所 | Tool for optical machining of laser gyroscope block |
| CN104493605A (en) * | 2014-12-18 | 2015-04-08 | 苏州道森阀门有限公司 | V-block tool allowing height adjustment for workpieces |
| CN205703414U (en) * | 2016-06-02 | 2016-11-23 | 上海瑞纽机械股份有限公司 | The turning auxiliary device of cartridge module in heat exchange unit in a kind of HTGR |
| CN109015018A (en) * | 2018-08-22 | 2018-12-18 | 陈崇南 | Universal type valve body flashboard built-up jig |
| CN109202488A (en) * | 2018-11-14 | 2019-01-15 | 霍山嘉远智能制造有限公司 | Unidirectional adjustable v-type block tooling |
| CN210360387U (en) * | 2019-07-30 | 2020-04-21 | 张家口第一煤矿机械有限公司 | Special fixture for piston rod milling and drilling |
| CN112025351A (en) * | 2020-08-21 | 2020-12-04 | 江南工业集团有限公司 | Combined clamp for machining thin-wall special-shaped shell and machining method of thin-wall special-shaped shell |
| CN214868767U (en) * | 2021-01-23 | 2021-11-26 | 济南华明博特智能技术有限公司 | V-shaped frame for boring machine |
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2021
- 2021-11-29 CN CN202111430881.7A patent/CN114211387A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8519766U1 (en) * | 1985-07-09 | 1986-11-06 | Werkzeugmaschinenfabrik Adolf Waldrich Coburg Gmbh & Co, 8630 Coburg | Gripping device |
| CN202607355U (en) * | 2012-05-15 | 2012-12-19 | 中国航天科工集团第三研究院第八三五八研究所 | Tool for optical machining of laser gyroscope block |
| CN104493605A (en) * | 2014-12-18 | 2015-04-08 | 苏州道森阀门有限公司 | V-block tool allowing height adjustment for workpieces |
| CN205703414U (en) * | 2016-06-02 | 2016-11-23 | 上海瑞纽机械股份有限公司 | The turning auxiliary device of cartridge module in heat exchange unit in a kind of HTGR |
| CN109015018A (en) * | 2018-08-22 | 2018-12-18 | 陈崇南 | Universal type valve body flashboard built-up jig |
| CN109202488A (en) * | 2018-11-14 | 2019-01-15 | 霍山嘉远智能制造有限公司 | Unidirectional adjustable v-type block tooling |
| CN210360387U (en) * | 2019-07-30 | 2020-04-21 | 张家口第一煤矿机械有限公司 | Special fixture for piston rod milling and drilling |
| CN112025351A (en) * | 2020-08-21 | 2020-12-04 | 江南工业集团有限公司 | Combined clamp for machining thin-wall special-shaped shell and machining method of thin-wall special-shaped shell |
| CN214868767U (en) * | 2021-01-23 | 2021-11-26 | 济南华明博特智能技术有限公司 | V-shaped frame for boring machine |
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