CN117020777B - Adjustable universal fixture for internal grinding of external centering thin-wall tube - Google Patents
Adjustable universal fixture for internal grinding of external centering thin-wall tube Download PDFInfo
- Publication number
- CN117020777B CN117020777B CN202311288721.2A CN202311288721A CN117020777B CN 117020777 B CN117020777 B CN 117020777B CN 202311288721 A CN202311288721 A CN 202311288721A CN 117020777 B CN117020777 B CN 117020777B
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- pipe body
- adjusting
- fixed
- disc
- hole
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- 230000000712 assembly Effects 0.000 claims abstract description 34
- 238000000429 assembly Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/40—Single-purpose machines or devices for grinding tubes internally
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
Abstract
The invention belongs to the field of clamp mechanisms, in particular to an adjustable universal clamp for internal grinding of an external centering thin-wall pipe; the invention provides an adjustable universal fixture for internal grinding of an external centering thin-wall pipe, which comprises the following components: the two clamp assemblies are used for fixing the pipe body in an axial fixing mode and a radial fixing mode, and each clamp assembly comprises a fixing disc and an adjusting disc; the fixed disc is provided with a first through hole for the pipe body to pass through; the surface of the fixed disc is connected with a plurality of sliding seats which can move towards the direction of the circle center, the sliding seats are connected with rotatable wheel frames which face the direction of the circle center of the fixed disc, and the wheel frames are connected with pinch rollers; the adjusting disc is provided with a second through hole for the pipe body to pass through; according to the invention, the pair of clamp assemblies is arranged, and the clamp assemblies are fixed on the pipe body in two modes of axial fixing and radial fixing, so that the two clamp assemblies are combined into a plurality of fixing modes of the pipe body, and different processing requirements of the pipe body are met.
Description
Technical Field
The invention relates to the technical field of clamp equipment, in particular to an adjustable universal clamp for an inner circular mill of an outer centering thin-wall pipe.
Background
In the machining industry, cutting, drilling and other machining of pipes are important parts nowadays: the pipe is cut and processed by the processing of the automobile, the drainage and exhaust aftertreatment system, the water supply and drainage system and various ventilation systems; at present, because the radiuses and the shapes of various pipes are different, the pipes must be positioned during processing to ensure the processing precision, so the nonstandard pipe tool design is a main manifold in the industry.
The existing pipe fixing clamp is single in structure and function, the pipe is clamped by the clamping blocks, at the moment, the axial direction and the radial direction of the pipe are fixed, different fixing modes of the pipe are needed for different machining modes of the pipe body, one clamp is only provided with one fixing mode, the fixing modes of the clamp cannot be converted, for example, the clamp cannot be adjusted from axial fixing to radial fixing, and the clamp cannot be adjusted from radial fixing to axial fixing, so that the existing clamp cannot be adjusted in a general mode, and the application range is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an adjustable universal clamp for the internal grinding of an external centering thin-wall pipe, and the adjustable universal clamp is provided with a pair of clamp assemblies, and the two clamp assemblies are mutually matched and combined into a plurality of fixing modes for fixing so as to adapt to different fixing occasions, so that the adjustable universal clamp aims at solving the problems in the background art.
In order to achieve the technical purpose, the specific technical scheme of the invention is as follows, and the adjustable universal fixture for the internal grinding of the external centering thin-wall pipe provided by the invention comprises the following components: the two clamp assemblies are mutually matched and combined to form a plurality of fixing modes of the pipe body; the clamp assembly comprises a fixed disc and an adjusting disc; the fixed disc is provided with a first through hole for the pipe body to pass through; the surface of the fixed disc is connected with a plurality of sliding seats capable of moving towards the circle center, the sliding seats are connected with rotatable wheel frames which face the circle center of the fixed disc, and the wheel frames are connected with pinch rollers for compressing and fixing the pipe; the adjusting disc is provided with a second through hole for the pipe body to pass through, and the adjusting disc is used for adjusting the direction of the pinch roller; when the direction of the pinch roller is vertical to the axial direction of the pipe body, the pipe body is axially fixed in the fixing mode, and the pipe body can rotate along the radial direction on the fixing disc; when the direction of the pinch roller is parallel to the axial direction of the pipe body, the pipe body is fixed in a radial mode, and the pipe body can move axially in the fixed disc; the direction of the pressing wheel is perpendicular to the axis of the pressing wheel.
As a preferable technical scheme of the invention, the fixed disc is provided with a plurality of first sliding holes which are in sliding connection with the sliding seat, and the surface of the fixed disc is rotationally connected with a plurality of threaded rods which are respectively in threaded connection with the sliding seats.
As a preferable technical scheme of the invention, the end part of the threaded rod is fixedly connected with a gear, the fixed disc is rotationally connected with a toothed ring meshed with the gear, and the toothed ring rotates to drive each threaded rod to simultaneously rotate and drive the sliding seat to move along the first sliding hole towards the direction close to the pipe body, so that the pinch roller is pressed and fixed on the pipe body.
As a preferable technical scheme of the invention, a fixed rod is fixedly connected to the wheel frame, a plurality of connecting blocks are connected to the adjusting plate, a connecting rod is rotationally connected between each connecting block and the corresponding fixed rod, a second sliding hole which is in sliding connection with the corresponding connecting block is formed in the adjusting plate, and the second sliding hole is parallel to the first sliding hole.
As a preferable technical scheme of the invention, the slide seat is fixedly connected with a stop block which is L-shaped and is used for limiting the rotation angle of the wheel frame; when one side of the wheel frame is contacted with the stop block, the direction of the pinch roller is parallel to the axial direction of the pipe body; when the other side of the wheel frame is contacted with the stop block, the direction of the pinch roller is perpendicular to the axial direction of the pipe body.
As a preferable technical scheme of the invention, a supporting base is fixedly connected between the two fixed discs; one of the clamp assemblies is connected with an adjusting screw rod, the adjusting screw rod penetrates through the fixed disc and is in threaded connection with the fixed disc, and one end of the adjusting screw rod is rotationally connected with the adjusting disc.
As a preferable technical scheme of the invention, a connecting piece is connected between the two adjusting discs, and the fixing mode of the two clamp assemblies to the pipe body is changed through adjusting the distance between the two adjusting discs by the connecting piece.
As a preferable technical scheme of the invention, a bracket is fixedly connected to the adjusting disk, a shaft lever is fixedly connected to the bracket, and a first connecting hole, a second connecting hole and a third connecting hole which are matched and connected with the shaft lever are symmetrically arranged on the adjusting disk respectively.
As a preferable technical scheme of the invention, the first connecting hole, the second connecting hole and the third connecting hole are arc-shaped holes, and the diameters of the first connecting hole, the second connecting hole and the third connecting hole are sequentially increased; when the shaft rod is connected in the first connecting hole, the distance between the two adjusting discs is the smallest, and at the moment, the two clamp assemblies are radially fixed to the pipe in a fixed mode; when the shaft rod is connected in the third connecting hole, the distance between the two adjusting discs is the largest, and at the moment, the two clamp assemblies are axially fixed to the pipe in a fixed mode; when the shaft rod is connected in the second connecting hole, the two adjusting discs are between the maximum and the minimum, and at the moment, the two clamp assemblies are respectively fixed in an axial direction and in a radial direction to the pipe body.
The beneficial effects of the invention are as follows: the clamp assembly is arranged in a pair of clamp assemblies, the clamp assemblies are fixed on the pipe body in an axial fixing mode and a radial fixing mode, the clamp assemblies comprise a fixed disc and an adjusting disc, a plurality of pinch rollers for fixing the pipe body are arranged on the fixed disc, the pinch rollers can be adjusted in a mode through the adjusting disc, and the fixing mode of the pipe body is changed; the two clamp assemblies are combined into a plurality of fixing modes for the pipe body so as to adapt to different processing requirements of the pipe body.
Drawings
Fig. 1 is a schematic structural diagram of an adjustable universal fixture for internal grinding of an external centering thin-walled tube.
Fig. 2 is a schematic front view of fig. 1.
Fig. 3 is a schematic structural diagram of a clamp assembly according to the present invention.
FIG. 4 is another angular schematic view of the clamp assembly according to the present invention.
Fig. 5 is a schematic structural view of a fixing disc according to the present invention.
Fig. 6 is a schematic diagram showing the connection of two adjusting discs according to the present invention.
Fig. 7 is a schematic structural diagram of a connector according to the present invention.
In the figure: 1. a fixed plate; 101. a toothed ring; 102. a first slide hole; 103. a slide; 104. a wheel carrier; 105. a pinch roller; 106. a first through hole; 107. a gear; 108. a fixed rod; 109. a threaded rod; 110. a stop block; 2. an adjusting plate; 201. a connecting block; 202. a second slide hole; 203. a second through hole; 204. a bracket; 205. a shaft lever; 3. a support base; 4. a connecting piece; 401. a first connection hole; 402. a second connection hole; 403. a third connection hole; 5. adjusting a screw; 6. and (5) connecting a rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples:
the embodiment discloses an adjustable universal fixture for internal grinding of an external centering thin-walled tube, as shown in fig. 1-7, the adjustable universal fixture comprises: the two clamp assemblies are used for fixing the pipe body in an axial fixing mode and a radial fixing mode, the two fixing modes can be mutually converted, for example, the axial fixing mode is converted into the radial fixing mode, and the two clamp assemblies are mutually matched and combined to form a plurality of fixing modes of the pipe body; the universal fixture has wide application range and is suitable for different machining modes of the pipe body.
As shown in fig. 3-5, the clamp assembly includes a fixed disk 1 and an adjustment disk 2; the fixed disk 1 is provided with a first through hole 106 for the pipe body to pass through, and the diameter of the first through hole 106 is larger than that of the pipe body; the surface of the fixed disc 1 is connected with a plurality of sliding seats 103 capable of moving towards the circle center direction, the number of the sliding seats 103 is three, the fixed disc 1 is provided with three first sliding holes 102 which are in sliding connection with the sliding seats 103, the surface of the fixed disc 1 is rotationally connected with a plurality of threaded rods 109 which are respectively in threaded connection with the sliding seats 103, the sliding seats 103 are connected with rotatable wheel frames 104 which face the circle center direction of the fixed disc 1, the wheel frames 104 are connected with pinch rollers 105, the pinch rollers 105 can rotate themselves, and the pinch rollers 105 are used for compressing and fixing a pipe body; the end of the threaded rod 109 is fixedly connected with a gear 107, the fixed disk 1 is rotationally connected with a toothed ring 101 meshed with the gear 107, and in the concrete implementation, each threaded rod 109 is simultaneously driven to rotate through the rotation of the toothed ring 101, and the threaded rod 109 drives the sliding seat 103 to move along the first sliding hole 102 towards the direction approaching to the pipe body when rotating, so that the pinch roller 105 compresses and fixes the pipe body; when the pipe body needs to be loosened, the toothed ring 101 is rotated reversely, the sliding seat 103 is driven to be away from the pipe body, and the pressing wheel 105 is separated from the pipe body.
The adjusting disc 2 is provided with a second through hole 203 for the pipe body to pass through, the diameter of the second through hole 203 is larger than that of the pipe body, and the adjusting disc 2 is used for adjusting the direction of the pressing wheel 105, wherein the direction of the pressing wheel 105 is the direction of the wheel circumference; the wheel frame 104 is fixedly connected with a fixed rod 108, the adjusting disc 2 is connected with a plurality of connecting blocks 201, a connecting rod 6 is rotationally connected between the connecting blocks 201 and the fixed rod 108, the adjusting disc 2 is provided with a second sliding hole 202 which is in sliding connection with the connecting blocks 201, and the second sliding hole 202 is parallel to the first sliding hole 102; by providing the second slide hole 202 and the connecting block 201, when the slide base 103 moves in the first slide hole 102, the connecting block 201 is driven to move in the second slide hole 202 so as to be matched with the fixation of the pipe; when the direction of the pinch roller 105 is perpendicular to the axial direction of the pipe body, the pipe body is fixed in an axial direction, static friction is generated between the pinch roller 105 and the axial direction of the pipe body, and the friction force is large, so that the pipe body is fixed in the axial direction, rolling friction is generated between the pinch roller 105 and the radial direction of the pipe body, and the friction force is small, so that the pipe body can rotate along the radial direction of the fixed disc 1; when the direction of the pinch roller 105 is parallel to the axial direction of the pipe body, the fixing mode of the pipe body is radial fixing, rolling friction is adopted between the pinch roller 105 and the axial direction of the pipe body, so that the pipe body can move in the axial direction in the fixed disc 1, static friction is adopted between the pinch roller 105 and the radial direction of the pipe body, the friction is high, the radial fixing is realized, when the fixing mode of the clamp assembly is required to be adjusted, the wheel frame 104 can be driven to rotate through the front and back movement of the adjusting disc 2, the direction of the pinch roller 105 is changed, and the fixing mode of the pipe body is changed; the direction of the pinch roller 105 is a direction perpendicular to the axis of the pinch roller 105.
Preferably, the slide 103 is fixedly connected with a stop block 110, and the stop block 110 is in an L-shaped structure and is used for limiting the rotation angle of the wheel frame 104; when one side of the wheel frame 104 contacts the stopper 110; when the other side of the wheel frame 104 is in contact with the stop block 110, the direction of the pressing wheel 105 is perpendicular to the axial direction of the pipe body, and the accuracy of the rotation angle of the pressing wheel 105 is improved and the fixing effect of the pipe body is ensured through the stop block 110.
Preferably, a supporting base 3 is fixedly connected between the two fixed discs 1; one clamp assembly is connected with an adjusting screw 5, the adjusting screw 5 penetrates through the fixed disc 1 and is in threaded connection with the fixed disc, and one end of the adjusting screw 5 is in rotary connection with the adjusting disc 2; the adjusting disk 2 can be driven to move by rotating the adjusting screw 5, so that the fixing mode of the clamp assembly is changed.
As shown in fig. 6-7, a connecting piece 4 is connected between the two adjusting discs 2, and the fixing mode of the two clamp assemblies to the pipe body is changed through adjusting the distance between the two adjusting discs 2 by the connecting piece 4; the adjusting disk 2 is fixedly connected with a bracket 204, the bracket 204 is fixedly connected with a shaft lever 205, the shaft lever 205 is connected with a locking nut, and the adjusting disk 2 is symmetrically provided with a first connecting hole 401, a second connecting hole 402 and a third connecting hole 403 which are matched and connected with the shaft lever 205 respectively; the first connecting hole 401, the second connecting hole 402 and the third connecting hole 403 are arc-shaped holes, and the diameters of the first connecting hole, the second connecting hole and the third connecting hole are sequentially increased; when the shaft rod 205 is connected in the first connecting hole 401, the space between the two adjusting discs 2 is minimum, and at this time, the two clamp assemblies are radially fixed to the pipe body; when the shaft rod 205 is connected in the third connecting hole 403, the distance between the two adjusting discs 2 is the largest, and at this time, the two clamp assemblies are axially fixed to the pipe body; when the shaft rod 205 is connected in the second connecting hole 402, the two adjusting discs 2 are between the maximum and the minimum, and the two clamp assemblies are respectively fixed on the pipe body in an axial fixing mode and a radial fixing mode; the two clamp assemblies are fixed by the connecting piece 4, so that a plurality of fixing modes are combined.
Working principle: according to the invention, the two clamp assemblies are arranged, and the clamp assemblies are fixed on the pipe body in two modes of axial fixing and radial fixing; the fixing mode of the clamp assembly can be adjusted through the adjusting screw 5 and the connecting piece 4; combining into a plurality of fixing modes; the first mode is that the two clamp assemblies are axially fixed on the pipe body, the pipe body can rotate along the radial direction at the moment, the fixing mode is suitable for the rotation of the pipe body, and the peripheral surface of the pipe body is machined; the second mode is that the two clamp assemblies are radially fixed on the pipe body, the pipe body can axially move at the moment, and the fixing mode is suitable for continuously processing the length direction of the pipe body; and in the third, two clamp assemblies are respectively fixed on the axial direction and the radial direction of the pipe body, and at the moment, any direction of the pipe body is limited, so that the pipe body is suitable for accurately machining the surface of the pipe body.
Finally, it should be noted that: in the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An adjustable universal fixture for internal grinding of an external centering thin-walled tube, which is characterized by comprising:
the two clamp assemblies are mutually matched and combined to form a plurality of fixing modes of the pipe body;
the clamp assembly comprises a fixed disc (1) and an adjusting disc (2);
a first through hole (106) through which the pipe body passes is formed in the fixed disc (1);
the surface of the fixed disc (1) is connected with a plurality of sliding seats (103) capable of moving towards the direction of the circle center, the sliding seats (103) are connected with rotatable wheel frames (104), and the wheel frames (104) are connected with pinch rollers (105) towards the direction of the circle center of the fixed disc (1) and used for compressing and fixing the pipe bodies;
the adjusting disc (2) is provided with a second through hole (203) for the pipe body to pass through, and the adjusting disc (2) is used for adjusting the direction of the pinch roller (105);
when the direction of the pinch roller (105) is vertical to the axial direction of the pipe body, the pipe body is axially fixed, and the pipe body can radially rotate in the fixed disc (1);
when the direction of the pinch roller (105) is parallel to the axial direction of the pipe body, the pipe body is fixed in a radial mode, and the pipe body can move axially in the fixed disc (1);
the direction of the pressing wheel (105) is a direction perpendicular to the axis of the pressing wheel (105);
a connecting piece (4) is connected between the two adjusting discs (2), and the fixing mode of the two clamp assemblies to the pipe body is changed through adjusting the distance between the two adjusting discs (2) by the connecting piece (4);
a bracket (204) is fixedly connected to the adjusting disc (2), a shaft lever (205) is fixedly connected to the bracket (204), and a first connecting hole (401), a second connecting hole (402) and a third connecting hole (403) which are matched and connected with the shaft lever (205) are symmetrically arranged on the adjusting disc (2) respectively;
the first connecting hole (401), the second connecting hole (402) and the third connecting hole (403) are arc-shaped holes, and the diameters of the first connecting hole, the second connecting hole and the third connecting hole are sequentially increased; when the shaft lever (205) is connected in the first connecting hole (401), the distance between the two adjusting discs (2) is the smallest, and at the moment, the two clamp assemblies are radially fixed to the pipe body; when the shaft rod (205) is connected in the third connecting hole (403), the interval between the two adjusting discs (2) is the largest, and at the moment, the two clamp assemblies are axially fixed to the pipe body; when the shaft rod (205) is connected in the second connecting hole (402), the two adjusting discs (2) are between the maximum and the minimum, and the two clamp assemblies are respectively fixed in an axial direction and a radial direction.
2. The adjustable universal fixture for the internal grinding of the external centering thin-walled tube according to claim 1 is characterized in that a plurality of first sliding holes (102) which are in sliding connection with the sliding seats (103) are formed in the fixed disc (1), and a plurality of threaded rods (109) are rotatably connected to the surface of the fixed disc (1) and are respectively in threaded connection with the sliding seats (103).
3. The adjustable universal fixture for the internal grinding of the external centering thin-walled tube according to claim 2 is characterized in that a gear (107) is fixedly connected to the end part of the threaded rod (109), a toothed ring (101) meshed with the gear (107) is rotatably connected to the fixed disc (1), and the toothed ring (101) rotates to drive each threaded rod (109) to rotate simultaneously to drive the sliding seat (103) to move along the first sliding hole (102) towards the direction close to the tube body, so that the pressing wheel (105) is fixedly pressed on the tube body.
4. An adjustable universal fixture for internal grinding of an external centering thin-walled tube according to claim 1 or 3, characterized in that a fixed rod (108) is fixedly connected to the wheel frame (104), a plurality of connecting blocks (201) are connected to the adjusting disc (2), a connecting rod (6) is rotationally connected between the connecting blocks (201) and the fixed rod (108), a second sliding hole (202) which is slidably connected with the connecting blocks (201) is arranged on the adjusting disc (2), and the second sliding hole (202) is parallel to the first sliding hole (102).
5. The adjustable universal fixture for the internal grinding of the outer centering thin-walled tube according to claim 4 is characterized in that a stop block (110) is fixedly connected to the sliding seat (103), and the stop block (110) is of an L-shaped structure and is used for limiting the rotation angle of the wheel frame (104); when one side of the wheel frame (104) is contacted with the stop block (110), the direction of the pinch roller (105) is parallel to the axial direction of the pipe body; when the other side of the wheel frame (104) is contacted with the stop block (110), the direction of the pinch roller (105) is perpendicular to the axial direction of the pipe body.
6. The adjustable universal fixture for the internal grinding of the outer centering thin-walled tube according to claim 5 is characterized in that a supporting base (3) is fixedly connected between the two fixed discs (1); one of the clamp assemblies is connected with an adjusting screw (5), the adjusting screw (5) penetrates through the fixed disc (1) and is in threaded connection with the fixed disc, and one end of the adjusting screw (5) is rotationally connected with the adjusting disc (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311288721.2A CN117020777B (en) | 2023-10-08 | 2023-10-08 | Adjustable universal fixture for internal grinding of external centering thin-wall tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311288721.2A CN117020777B (en) | 2023-10-08 | 2023-10-08 | Adjustable universal fixture for internal grinding of external centering thin-wall tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117020777A CN117020777A (en) | 2023-11-10 |
| CN117020777B true CN117020777B (en) | 2024-04-05 |
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ID=88626696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311288721.2A Active CN117020777B (en) | 2023-10-08 | 2023-10-08 | Adjustable universal fixture for internal grinding of external centering thin-wall tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117020777B (en) |
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2023
- 2023-10-08 CN CN202311288721.2A patent/CN117020777B/en active Active
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| Publication number | Publication date |
|---|---|
| CN117020777A (en) | 2023-11-10 |
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