CN114043257A - Method for controlling clearance of hydrostatic guideway - Google Patents
Method for controlling clearance of hydrostatic guideway Download PDFInfo
- Publication number
- CN114043257A CN114043257A CN202111466446.XA CN202111466446A CN114043257A CN 114043257 A CN114043257 A CN 114043257A CN 202111466446 A CN202111466446 A CN 202111466446A CN 114043257 A CN114043257 A CN 114043257A
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- China
- Prior art keywords
- guide rail
- fixed guide
- spacer
- fixed
- movable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
Abstract
The invention discloses a clearance control method of a hydrostatic guideway, belonging to the field of hydrostatic guideway processing.A fixed guideway is provided with a detachable spacer, an installation block is pressed on the spacer, the spacer is clamped between the installation block and the fixed guideway and is connected with each installation block to form a movable guideway, and the spacer is arranged between the movable guideway and the fixed guideway at intervals to form a required clearance between the movable guideway and the fixed guideway. This patent can be through deciding the guide rail on the installation distance piece, only need to install the piece and sticis on the distance piece, connects each installation piece combination again and forms and move the guide rail, and the distance piece interval is moving the guide rail and deciding the required clearance of formation oil pocket/air cavity between the guide rail, need not the size of each installation piece of accurate setting, improves machining efficiency, and it is more convenient to make the guide rail assemble.
Description
Technical Field
The invention relates to the field of hydrostatic guideway machining, in particular to a clearance control method of a hydrostatic guideway.
Background
The hydrostatic guide rail has been widely used in machine tools due to small friction, small vibration, and high guide rail precision. The static pressure guide rail is divided into an oil static pressure guide rail and an air static pressure guide rail, generally comprises a fixed guide rail and a movable guide rail, wherein the movable guide rail is arranged on the fixed guide rail in a sliding manner, an oil film gap or an air film gap is formed between the movable guide rail and the fixed guide rail, oil or air with certain pressure is input into the oil film gap or the air film gap, a bearing oil film or a bearing air film can be formed, and the movable guide rail and the fixed guide rail are in a pure liquid or gas friction state.
The utility model discloses a static pressure guide rail and its adjusting method of oil film thickness adjustable for No. CN101280804A, including slider and fixing base, have multiunit opposed static pressure oil pocket and corresponding oil inlet channel on the slider relative to fixing base, have the oil film clearance between slider and the fixing base, the slider is the elastomer, can produce elastic deformation and make the oil film clearance adjustable.
The clearance that has certain width between the movable guide rail of above-mentioned patent and the fixed guide rail, when the guide rail is moved in production and processing, the size of each installation piece of movable guide rail need be through the precision calculation, link together each installation piece again and form movable guide rail, will move the guide rail and adorn on the fixed guide rail, when production and processing, in order to keep gapped size, the degree of difficulty of processing and assembly has greatly been increased, certain size error appears, then when probably influencing movable guide rail and adorning on the fixed guide rail, move the clearance between guide rail and the fixed guide rail.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for installing a movable guide rail for forming a gap of an oil cavity/an air cavity between the movable guide rail and a fixed guide rail in a hydrostatic guide rail.
The technical scheme of the invention is as follows: the clearance control method of the hydrostatic guideway is characterized in that: the movable guide rail is formed by connecting the mounting blocks, and the distance piece is arranged between the movable guide rail and the fixed guide rail at intervals to form a required gap between the movable guide rail and the fixed guide rail.
The further optimization scheme of the invention is as follows: the method comprises the following steps:
s1: manufacturing a spacer with the thickness consistent with the gap value according to the gap value required by the oil cavity/air cavity formed between the movable guide rail and the fixed guide rail;
s2: detachably connecting the spacing piece at the position of the fixed guide rail where an oil cavity/an air cavity is required to be formed;
s3: tightly attaching each mounting block to the fixed guide rail, so that the mounting blocks and the fixed guide rail clamp the middle spacer;
s4: fixedly connecting the mounting blocks together to form a required movable guide rail, and forming a gap required by an oil cavity/an air cavity between the movable guide rail and the fixed guide rail at intervals by using the spacing pieces;
s5: moving the movable guide rail away from the assembly position of the fixed guide rail through external force;
s6: the spacer detachably attached to the stationary rail is removed.
The further optimization scheme of the invention is as follows: when the clearance value required for forming the oil cavity/air cavity between the movable guide rail and the fixed guide rail in the step S1 is zero, the thickness of the required spacer is zero, the mounting block is directly pressed on the fixed guide rail, the mounting block is directly contacted with the fixed guide rail, and the mounting blocks are connected to form the movable guide rail.
The further optimization scheme of the invention is as follows: in step S1, the spacer is a plastic film.
The further optimization scheme of the invention is as follows: in step S2, the spacer is fixed to the stationary rail by gluing.
The further optimization scheme of the invention is as follows: and 3, pressing the mounting blocks on the fixed guide rail through external force to enable the spacing piece to be clamped between the mounting blocks and the fixed guide rail, and fixedly connecting the mounting blocks together through screws to form the required movable guide rail.
Compared with the prior art, the invention has the advantages that the distance piece is arranged on the fixed guide rail, the mounting blocks are only required to be tightly pressed on the distance piece, the distance piece is pressed between the fixed guide rail and the mounting blocks, then the mounting blocks are connected and combined to form the movable guide rail, the distance piece forms a gap required by an oil cavity/an air cavity between the movable guide rail and the fixed guide rail at intervals, the movable guide rail is assembled, the size of each mounting block does not need to be precisely set, the processing efficiency is improved, and the movable guide rail is more convenient to assemble.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
Fig. 1 is a schematic structural view showing a spacer mounted on a fixed rail when a movable rail is of a half-wrapped structure.
Fig. 2 is a schematic structural view of the mounting block pressing on the fixed guide rail when the movable guide rail is of a half-wrapped structure.
Fig. 3 is a sectional view of the mounting block pressed against the fixed rail when the movable rail is of a half-wrapped structure.
Fig. 4 is a schematic view showing a state where the movable rail is pushed away from the fixed rail mounting position when the movable rail is of a half-wrapped structure.
Fig. 5 is a schematic structural view of the movable rail in a half-wrapped structure with the spacer removed.
Fig. 6 is a sectional view showing the movable rail in a half-wrapped configuration with the spacer removed.
Fig. 7 is a schematic view showing a structure in which the spacer is mounted on the fixed rail when the movable rail is in a fully-enclosed structure.
Fig. 8 is a schematic structural view of the mounting block pressing on the fixed guide rail when the movable guide rail is in a full-wrap structure.
Fig. 9 is a sectional view of the mounting block pressed against the fixed rail when the movable rail is in a fully wrapped configuration.
Fig. 10 is a schematic view showing a state in which the movable rail is pushed away from the fixed rail mounting position when the movable rail is of a fully wrapped structure.
Fig. 11 is a schematic view of the movable rail in a fully wrapped configuration with the spacer removed.
Fig. 12 is a sectional view of the movable rail in a fully wrapped configuration with the spacer removed.
In the figure: 1. fixing a guide rail; 2. a spacer; 3. mounting blocks; 4. a movable guide rail; 5. a screw; 6. a first mounting block; 7. mounting a third block; 8. a second mounting block; 9. a gap; 10. and mounting the block four.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 12, the present embodiment relates to a method of controlling a clearance of a hydrostatic guideway.
A detachable spacer 2 is arranged on a fixed guide rail 1 of a static pressure guide rail, an installation block 3 for combining a movable guide rail 4 is pressed on the spacer 2, the spacer 2 is clamped between the installation block 3 and the fixed guide rail 1, the installation blocks 3 are connected and combined to form the movable guide rail 4, the spacer 2 is arranged between the movable guide rail 4 and the fixed guide rail 1 at intervals, and a required gap 9 is formed between the movable guide rail 4 and the fixed guide rail 1.
It is possible to obtain gaps 9 of different sizes by providing spacers 2 of different thicknesses between the mounting block 3 and the fixed rail 1, i.e. the thickness of the spacer 2 is equal to the width of the gap 9 required between the movable rail 4 and the fixed rail 1 when the movable rail 4 is fitted to the fixed rail 1.
The method comprises the following specific steps:
s1: manufacturing a spacer 2 with the thickness consistent with the gap value according to the gap value required by the oil cavity/air cavity formed between the movable guide rail 4 and the fixed guide rail 1;
s2: detachably connecting the spacing piece 2 at the position of the fixed guide rail 1 where an oil cavity/air cavity is required to be formed;
s3: tightly attaching each mounting block 3 to the fixed guide rail 1, so that the mounting blocks 3 and the fixed guide rail 1 clamp the spacer 2 in the middle;
s4: fixedly connecting the mounting blocks 3 together to form a required movable guide rail 4, and forming a gap 9 required by an oil cavity/an air cavity between the movable guide rail 4 and the fixed guide rail 1 at intervals by the distance piece 2;
s5: moving the movable guide rail 4 away from the assembling position of the fixed guide rail 1 by external force;
s6: the spacer 2 detachably attached to the stationary rail 1 is detached.
At this time, the movable guide rail 4 is assembled on the fixed guide rail 1, a gap 9 as an oil cavity/air cavity is formed between the movable guide rail 4 and the fixed guide rail 1, the width of the gap 9 is equal to the thickness of the spacing piece 2, oil or air with certain pressure is input into the gap 9, a bearing oil film or a bearing air film can be formed, the movable guide rail 4 and the fixed guide rail 1 are in a pure liquid or gas friction state, and the friction, the vibration and the precision are small when the movable guide rail 4 slides on the fixed guide rail 1.
Preferably, the spacer 2 in step S1 is a plastic film, and the gaps 9 with different widths are processed by setting plastic films with different thicknesses. The patent is not limited to the use of plastic film as the spacer 2, and other materials such as metal foil and ceramic foil are also suitable.
Preferably, the spacer 2 in step S2 is fixed on the fixed rail 1 by gluing, which facilitates fixing the spacer 2 on the fixed rail 1, and since the spacer 2 is extremely thin, the shape of the spacer 2 is not affected by gluing, which avoids deformation of the spacer 2, and when the spacer 2 needs to be removed, the gluing facilitates removal of the spacer 2 from the fixed rail 1.
Preferably, step 3 and step 4 press each mounting block 3 against the fixed guide rail 1 by external force, the external force may be provided by a clamp, or the pressing block may be driven by a telescopic mechanism to press tightly, the telescopic mechanism may include a hydraulic cylinder or an air cylinder, the external force clamps the spacing piece 2 between the mounting block 3 and the fixed guide rail 1, and then fixedly connect each mounting block 3 together by screws 5, so that each mounting block 3 is combined to form the required movable guide rail 4, and the movable guide rail 4 is assembled on the fixed guide rail 1.
Preferably, the movable guide rail 4 formed by combining the installation blocks 3 can drive the pushing block to push away from the assembly position of the fixed guide rail 1 through a telescopic mechanism, and the telescopic mechanism can comprise a hydraulic cylinder or an air cylinder.
The movable guide rail 4 is divided into a half-wrapping part on the fixed guide rail 1 and a full-wrapping part on the fixed guide rail 1.
As shown in fig. 1-6, when the movable guide rail 4 is a structure half-wrapped on the fixed guide rail 1, for example, the movable guide rail 4 includes a first mounting block 6 and a second mounting block 8 on both sides and a third mounting block 7 in the middle, when the movable guide rail 4 is assembled at the assembling position of the fixed guide rail 1, assuming that an oil film gap or an air film gap is formed between both sides of the fixed guide rail 1 and the first mounting block 6 and the second mounting block 8 on both sides, when the oil film gap or the air film gap is processed, the spacer 2 having the same thickness as the oil film gap or the air film gap is manufactured according to the width of the oil film gap or the air film gap, the spacer 2 is adhered to both sides of the fixed guide rail 1 by glue to the position where the oil cavity/air cavity is required to be formed, then the first mounting block 6 and the second mounting block 8 are respectively adhered to both sides of the fixed guide rail 1, the first mounting block 6 and the second mounting block 8 are pressed toward the middle by external forces on both sides, so that the first mounting block 6 and the second mounting block 8 are tightly pressed against the spacer 2 on both sides, attaching the mounting block III 7 to the top of the assembly position of the fixed guide rail 1, respectively connecting the mounting block I6 and the mounting block II 8 with the mounting block III 7 through screws 5, combining the mounting block I6, the mounting block II 8 and the mounting block III 7 to form a movable guide rail 4, pushing the movable guide rail 4 formed by combining the mounting block I6, the mounting block II 8 and the mounting block III 4 away from the assembly position on the fixed guide rail 1 through external force, detaching the spacing pieces 2 adhered to the two sides of the fixed guide rail 1 to complete the assembly of the movable guide rail 4, and forming a required oil cavity/air cavity between the left side and the right side of the fixed guide rail 1 and the movable guide rail 4 at the moment.
Fig. 7 to 12 show that, when the movable guide rail 4 is a structure completely wrapped on the fixed guide rail 1, for example, the movable guide rail 4 includes a first installation block 6, a second installation block 8, a third installation block 7 and a fourth installation block 10, when the movable guide rail 4 is assembled at the assembly position of the fixed guide rail 1, assuming that oil film gaps or air film gaps are respectively formed between the upper, lower, left and right sides of the fixed guide rail 1 and the movable guide rail 4, when the oil film gaps or the air film gaps are processed, the distance element 2 with the same thickness as the oil film gaps or the air film gaps is manufactured according to the width of the oil film gaps or the air film gaps, the distance element 2 is adhered to the upper, lower, left and right sides of the fixed guide rail 1 by glue at the position where the oil cavity/air cavity is required to be formed, then the first installation block 6, the second installation block 8, the third installation block 7 and the fourth installation block 10 are respectively adhered to the four sides of the fixed guide rail 1, and the first installation block 6, the second installation block 10 are pressed toward the fixed guide rail 1 by external force, A second mounting block 8, a third mounting block 7 and a fourth mounting block 10, wherein the first mounting block 6, the second mounting block 8, the third mounting block 7 and the fourth mounting block 10 are respectively pressed on the spacing pieces 2 on the four sides of the fixed guide rail 1, one end of the second mounting block 8 is attached to the side wall of the first mounting block 6, one end of the third mounting block 7 is attached to the side wall of the second mounting block 8, one end of the fourth mounting block 10 is attached to the side wall of the third mounting block 7, one end of the first mounting block 6 is attached to the side wall of the fourth mounting block 10, the first mounting block 6, the second mounting block 8, the third mounting block 7 and the fourth mounting block 10 form a circle, as shown in figure 9, the first mounting block 6, the second mounting block 8, the third mounting block 7 and the fourth mounting block 10 are fixed with screws 5, the first mounting block 6, the second mounting block 8, the third mounting block 7 and the fourth mounting block 10 are combined to form a complete movable guide rail 4, and the movable guide rail 4 is pushed away from the assembling position of the fixed guide rail 1 by external force, the spacer 2 adhered to the fixed rail 1 is removed to complete the assembly of the movable rail 4, and a desired oil/air chamber is formed between the four sides of the fixed rail 1 and the movable rail 4.
When symmetrical oil cavities/air cavities are arranged between the movable guide rail 4 and the fixed guide rail 1, a spacer 2 with the thickness equal to the sum of the widths of the symmetrical oil cavities/air cavities can be manufactured, and the spacer 2 is adhered to one side of the fixed guide rail 1, so that the same effect can be achieved.
When the clearance value required for forming the oil cavity/air cavity between the movable guide rail 4 and the fixed guide rail 1 in the step S1 is zero, the thickness of the required spacer 2 is zero, the mounting block 3 can be directly pressed on the fixed guide rail 1, the mounting block 3 is in direct contact with the fixed guide rail 1, the mounting blocks 3 are connected and combined to form the required movable guide rail 4, the assembly of the movable guide rail 4 is completed, and the static pressure guide rail with zero clearance between the movable guide rail 4 and the fixed guide rail 1 is formed by assembly.
The clearance control method for the hydrostatic guideway provided by the present invention is described in detail above, and the principle and the embodiment of the present invention are explained in the present document by applying specific examples, and the above description of the embodiments is only used to help understanding the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. The clearance control method of the hydrostatic guideway is characterized in that: the movable guide rail is formed by connecting the mounting blocks, and the distance piece is arranged between the movable guide rail and the fixed guide rail at intervals to form a required gap between the movable guide rail and the fixed guide rail.
2. The method of controlling a clearance of a hydrostatic guideway as claimed in claim 1, wherein: the method comprises the following steps:
s1: manufacturing a spacer with the thickness consistent with the gap value according to the gap value required by the oil cavity/air cavity formed between the movable guide rail and the fixed guide rail;
s2: detachably connecting the spacing piece at the position of the fixed guide rail where an oil cavity/an air cavity is required to be formed;
s3: tightly attaching each mounting block to the fixed guide rail, so that the mounting blocks and the fixed guide rail clamp the middle spacer;
s4: fixedly connecting the mounting blocks together to form a required movable guide rail, and forming a gap required by an oil cavity/an air cavity between the movable guide rail and the fixed guide rail at intervals by using the spacing pieces;
s5: moving the movable guide rail away from the assembly position of the fixed guide rail through external force;
s6: the spacer detachably attached to the stationary rail is removed.
3. The method of controlling a clearance of a hydrostatic guideway as claimed in claim 2, wherein: when the clearance value required for forming the oil cavity/air cavity between the movable guide rail and the fixed guide rail in the step S1 is zero, the thickness of the required spacer is zero, the mounting block is directly pressed on the fixed guide rail, the mounting block is directly contacted with the fixed guide rail, and the mounting blocks are connected to form the movable guide rail.
4. The method of controlling a clearance of a hydrostatic guideway as claimed in claim 2, wherein: in step S1, the spacer is a plastic film.
5. The method of controlling a clearance of a hydrostatic guideway as claimed in claim 2, wherein: in step S2, the spacer is fixed to the stationary rail by gluing.
6. The method of controlling a clearance of a hydrostatic guideway as claimed in claim 2, wherein: and 3, pressing the mounting blocks on the fixed guide rail through external force to enable the spacing piece to be clamped between the mounting blocks and the fixed guide rail, and fixedly connecting the mounting blocks together through screws to form the required movable guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111466446.XA CN114043257B (en) | 2021-12-03 | 2021-12-03 | Clearance control method for hydrostatic guideway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111466446.XA CN114043257B (en) | 2021-12-03 | 2021-12-03 | Clearance control method for hydrostatic guideway |
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| Publication Number | Publication Date |
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| CN114043257A true CN114043257A (en) | 2022-02-15 |
| CN114043257B CN114043257B (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111466446.XA Active CN114043257B (en) | 2021-12-03 | 2021-12-03 | Clearance control method for hydrostatic guideway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505693A (en) * | 2022-02-18 | 2022-05-17 | 浙江亚微精密机床有限公司 | Machining method of movable guide rail locking structure of hydrostatic guide rail |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189410A (en) * | 2011-03-23 | 2011-09-21 | 西安交通大学 | T-shaped hydrostatic guide rail for precision finishing machine tool |
| JP2013136108A (en) * | 2011-12-28 | 2013-07-11 | Jtekt Corp | Slide table device |
| CN111590340A (en) * | 2020-06-29 | 2020-08-28 | 青岛科技大学 | Active control air cushion static pressure slide block module for aerostatic pressure guide rail |
-
2021
- 2021-12-03 CN CN202111466446.XA patent/CN114043257B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189410A (en) * | 2011-03-23 | 2011-09-21 | 西安交通大学 | T-shaped hydrostatic guide rail for precision finishing machine tool |
| JP2013136108A (en) * | 2011-12-28 | 2013-07-11 | Jtekt Corp | Slide table device |
| CN111590340A (en) * | 2020-06-29 | 2020-08-28 | 青岛科技大学 | Active control air cushion static pressure slide block module for aerostatic pressure guide rail |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505693A (en) * | 2022-02-18 | 2022-05-17 | 浙江亚微精密机床有限公司 | Machining method of movable guide rail locking structure of hydrostatic guide rail |
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| CN114043257B (en) | 2022-12-23 |
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Denomination of invention: Gap Control Method for Hydrostatic Guideway Effective date of registration: 20230809 Granted publication date: 20221223 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Jinhua Wuyi sub branch Pledgor: Zhejiang Yawei Precision Machine Tool Co.,Ltd. Registration number: Y2023330001687 |
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