CN111720510A - High-precision movement shaft of machine tool and working method - Google Patents
High-precision movement shaft of machine tool and working method Download PDFInfo
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- CN111720510A CN111720510A CN202010439768.4A CN202010439768A CN111720510A CN 111720510 A CN111720510 A CN 111720510A CN 202010439768 A CN202010439768 A CN 202010439768A CN 111720510 A CN111720510 A CN 111720510A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000033001 locomotion Effects 0.000 title claims abstract description 16
- 230000003044 adaptive effect Effects 0.000 claims abstract description 18
- 230000006978 adaptation Effects 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000020169 heat generation Effects 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/46—Movable or adjustable work or tool supports using particular mechanisms with screw pairs
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
- B23Q5/404—Screw bearings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2229/00—Setting preload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2231/00—Running-in; Initial operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention relates to the technical field of machine tool equipment, in particular to a high-precision motion shaft of a machine tool and a working method. The equipment comprises a base, a screw shaft, a bearing, a limiting end cover and a disc spring, wherein the screw shaft comprises a large-diameter section and a small-diameter section, the limiting end cover is arranged at the outer end of the base, the bearing comprises an outer ring, an inner ring and a roller, an annular protruding limiting part which contracts inwards is arranged in the base, the outer ring is clamped and positioned between the annular protruding limiting part and the limiting end cover, the base comprises a reference seat and an adaptive seat, and the inner ring is clamped and positioned between the limiting end cover and the large-diameter section in the reference seat; in the adaptive seat, the disc spring is sleeved on the small-diameter section, and the disc spring is tightly propped between the end part of the large-diameter section and the inner ring, so that the inner ring is clamped and positioned between the limiting end cover and the disc spring. The thermal change deformation that the lead screw axle produced offsets through the adaptability deformation of dish spring, has effectively protected bearing unit, has improved equipment life, has guaranteed equipment long-term high accuracy steady operation simultaneously.
Description
Technical Field
The invention relates to the technical field of machine tool equipment, in particular to a high-precision motion shaft of a machine tool and a working method.
Background
The screw-nut pair is an important moving part in machine tool equipment, and the moving precision of the screw-nut pair determines the machining precision of machine tool products. The lead screw shaft in the lead screw nut pair is a rotating part, but it is equipped with bearing and base swivelling joint through the cover on it, because ambient temperature changes and equipment operation themogenesis, the lead screw shaft can produce a certain amount of deformation because of thermal change, this deformation can lead to bearing inner race and outer lane relative position to take place the slight change, this change can lead to the roller to rotate and take place transitional wear, can make bearing life-span shorten the damage in the past for a long time, and then lead to the unable normal operating of equipment, need to change the bearing in order to restore the lathe, need calibrate equipment after changing the bearing, the secondary calibration can't reach the original precision of equipment, therefore even if repaired the lathe also can lead to equipment performance to descend.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the high-precision movement shaft of the machine tool, which has long service life and high precision.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a lathe high accuracy motion axle, includes base, screw shaft, bearing, the base is equipped with two, the screw shaft includes the major diameter section, locates the path section at major diameter section both ends, and the cover is equipped with bearing and rotatable in locating two bases on the path section, its characterized in that: the bearing comprises an outer ring, an inner ring and a roller, the base is internally provided with an annular convex limiting part which is internally contracted, the outer ring is clamped and positioned between the annular convex limiting part and the limiting end cover, the base comprises a reference seat and an adaptive seat, and the inner ring is clamped and positioned between the limiting end cover and the large-diameter section in the reference seat; in the adaptive seat, the disc spring is sleeved on the small-diameter section, and the disc spring is tightly propped between the end part of the large-diameter section and the inner ring, so that the inner ring is clamped and positioned between the limiting end cover and the disc spring.
Furthermore, the limiting end cover comprises a compression outer ring, a first jacking inner ring and a locking spiral ring, the compression outer ring is locked with the base through a bolt and is extruded towards the outer ring, a space for accommodating the first jacking inner ring is formed between the compression outer ring and the small-diameter section, threads are arranged at the end part of the small-diameter section, the locking spiral ring is arranged on the small-diameter section in a threaded fit mode, the first jacking inner ring is sleeved on the small-diameter section and located between the inner ring and the locking spiral ring, and the locking spiral ring rotates and is extruded towards the inner ring through the first jacking inner ring.
Furthermore, a second tightly-jacking inner ring is arranged in the adapting seat, a space for accommodating the second tightly-jacking inner ring is formed between the annular protruding limiting part and the small-diameter section, and the second tightly-jacking inner ring is sleeved on the small-diameter section and is located between the inner ring and the disc spring.
Furthermore, a first dustproof ring is arranged in the adaptive seat, the first dustproof ring is sleeved on the small-diameter section and located between the end part of the large-diameter section and the disc spring, and the first dustproof ring fills a gap between the adaptive seat and the small-diameter section.
Furthermore, a second dustproof ring is arranged in the reference seat, the second dustproof ring is sleeved on the large-diameter section, and the second dustproof ring fills a gap between the reference seat and the large-diameter section.
Furthermore, one side of the base is provided with an anti-collision block.
Furthermore, a flow guide hole is formed in the base, and the flow guide hole extends into the base from the bottom of the base.
A working method of a moving shaft is based on any one of the above mentioned moving shafts with high precision, and is characterized in that: comprises that
Calibrating when leaving the factory, assembling and calibrating the bearing in the reference seat and the adaptive seat to accurate positioning, namely, the relative positions of the outer ring, the inner ring and the roller of the bearing are accurate;
in practical use, due to environmental temperature change and equipment operation heat generation, the screw shaft generates a certain amount of deformation due to thermal change, and the length of the large-diameter section is far greater than that of the small-diameter section, so that the deformation generated by the screw shaft is mainly reflected on the change of the length of the large-diameter section; in the adaptation seat, the change of the length of the large-diameter section leads to the change of the distance between the end part of the large-diameter section and the inner ring of the bearing, and the disc spring is positioned between the end part of the large-diameter section and the inner ring, so that the disc spring generates extension or shortening adaptive change to offset the change of the distance between the end part of the large-diameter section and the inner ring of the bearing, and further the relative positions of the outer ring, the inner ring and the roller of the bearing in the adaptation seat are kept unchanged.
Further, the specific calibration steps during factory shipment are as follows: installing a screw shaft in a reference seat and an adaptive seat, adjusting the reference seat, namely rotating a locking spiral ring to extrude a first tightly-jacking inner ring so as to finely adjust the position of an inner ring, and adjusting to enable the outer ring, the inner ring and a roller of a bearing in the reference seat to be in accurate positions; and then the adaptation seat is adjusted, namely the locking bolt is rotated to extrude the first tightly-propping inner ring to finely adjust the position of the inner ring, and the disc spring is positioned between the end part of the large-diameter section and the inner ring, so that the disc spring can be extended or contracted adaptively in the adjustment process, the position of the large-diameter section cannot be changed in the adjustment process, and the outer ring, the inner ring and the roller of the bearing in the adaptation seat are positioned at accurate positions in the adjustment process.
From the above description of the invention, compared with the prior art, the high-precision motion shaft of the machine tool and the working method thereof provided by the invention have the advantages that the disc spring is additionally arranged, so that the thermal change deformation generated by the screw shaft is offset through the adaptive deformation of the disc spring, the bearing part is effectively protected, the service life of the equipment is prolonged, and the long-term high-precision stable operation of the equipment is ensured.
Drawings
Fig. 1 is a schematic view of an adapter of the present invention.
FIG. 2 is a schematic diagram of a reference seat structure according to the present invention.
Fig. 3 is a schematic structural view of a high-precision motion shaft of a machine tool according to the invention.
The labels in the figure correspond to the following: 1. the anti-collision device comprises a base, 11 parts of a reference seat, 12 parts of an adapter seat, 13 parts of an annular protruding limiting part, 14 parts of a second jacking inner ring, 15 parts of a first dustproof ring, 16 parts of a second dustproof ring, 17 parts of an anti-collision block, 18 parts of a flow guide hole, 2 parts of a screw shaft, 21 parts of a large-diameter section, 22 parts of a small-diameter section, 221 parts of threads, 23 parts of a moving table, 3 parts of a bearing, 31 parts of an outer ring, 32 parts of an inner ring, 33 parts of a roller, 4 parts of a limiting end cover, 41 parts of a pressing outer ring, 42 parts of the first jacking inner ring, 43 parts of a locking spiral ring and 5 parts of a.
Detailed Description
The invention is further described below by means of specific embodiments.
Referring to fig. 1 to 3, a high-precision motion shaft of a machine tool includes a base 1, a screw shaft 2, a bearing 3, a limit end cover 4, and a disc spring 5.
The screw shaft 2 comprises a large-diameter section 21 and small-diameter sections 22 arranged at two ends of the large-diameter section 21, and the length of the large-diameter section 21 is far greater than that of the small-diameter sections 22. The base 1 is equipped with two, including reference base 11, adaptation seat 12, overlaps on two footpath sections 22 of screw shaft 2 to be equipped with bearing 3 and rotatable locating respectively in base 11 and adaptation seat 12. The bearing 3 comprises an outer ring 31, an inner ring 32 and a roller 33, the limiting end cover 4 is arranged at the outer end of the base 1, the limiting end cover 4 comprises a pressing outer ring 41, a first jacking inner ring 42 and a locking spiral ring 43, the pressing outer ring 41 is locked with the base 1 through a bolt to be extruded towards the outer ring 31, a space for accommodating the first jacking inner ring 42 is formed between the pressing outer ring 41 and the small-diameter section 21, a thread 221 is arranged at the end part of the small-diameter section 22, the locking spiral ring 43 is matched with the thread 221 and arranged on the small-diameter section 22, the first jacking inner ring 42 is sleeved on the small-diameter section 22 and positioned between the inner ring 32 and the locking spiral ring 43, the locking spiral ring 43 rotates to be extruded towards the inner ring 32 through the first jacking inner ring 42, an internally contracted annular convex limiting part 13 is arranged in the base 1, and the outer ring 31 is clamped and positioned between the annular convex. In the reference seat 11, the inner ring 32 is clamped and positioned between the first jacking inner ring 43 of the limit end cover 4 and the large-diameter section 21; in the adapting seat 12, the disc spring 5 is sleeved on the small diameter section 22, and the disc spring 5 is tightly pressed between the end of the large diameter section 21 and the inner ring 32, so that the inner ring 32 is clamped and positioned between the first tightly pressed inner ring 43 of the limiting end cover 4 and the disc spring 5. The adapter 12 is internally provided with a second tightly-pushing inner ring 14, a space for accommodating the second tightly-pushing inner ring 14 is formed between the annular protruding limiting portion 13 and the small-diameter section 22, and the second tightly-pushing inner ring 14 is sleeved on the small-diameter section 22 and is located between the inner ring 32 and the disc spring 5.
A first dustproof ring 15 is arranged in the adaptation seat 12, the first dustproof ring sleeve 15 is arranged on the small-diameter section 22 and located between the end of the large-diameter section 21 and the disc spring 5, and the first dustproof ring 15 fills a gap between the adaptation seat 12 and the small-diameter section 22. A second dust ring 16 is arranged in the reference seat 11, the second dust ring 16 is sleeved on the large-diameter section 21, and the second dust ring 16 fills a gap between the reference seat 11 and the large-diameter section 21.
The screw shaft 2 is provided with a moving platform 23, the transmission screw thread of the screw shaft 2 is formed on the large-diameter section 21, the moving platform 23 is movably arranged on the large-diameter section 21 through the transmission screw thread, and one side of the base 1 facing the moving platform 23 is provided with an anti-collision block 17. A diversion hole 18 is arranged in the base 1, and the diversion hole 18 extends into the base 1 from the bottom of the base 1.
A working method of a moving shaft comprises the following steps:
assembling and calibrating when leaving a factory, installing the screw shaft 2 in the reference seat 11 and the adapter seat 12, firstly calibrating the reference seat 11, namely extruding the first tightly-jacking inner ring 42 by the rotary locking spiral ring 43 to finely adjust the position of the inner ring 32, and enabling the outer ring 31, the inner ring 32 and the roller 33 of the bearing 3 in the reference seat 11 to be in accurate positions by calibration; and then, the adapting seat 12 is adjusted, namely, the locking bolt 43 is rotated to extrude the first tightly-jacking inner ring 42 to finely adjust the position of the inner ring 32, and the disc spring 5 is positioned between the end part of the large-diameter section 21 and the inner ring 32, so that the disc spring 5 can be adaptively extended or contracted in the adjusting process, the position of the large-diameter section 21 cannot be changed in the adjusting process, and the outer ring 31, the inner ring 32 and the roller 33 of the bearing 3 in the adapting seat 12 are accurately positioned in the adjusting process.
In actual use, due to environmental temperature change and equipment operation heat generation, the screw shaft 2 generates a certain amount of deformation due to thermal change, and because the length of the large-diameter section 21 is far greater than that of the small-diameter section 22, the deformation generated by the screw shaft 2 is mainly reflected on the change of the length of the large-diameter section 22, and because the assembly positions of all components in the reference base 11 are fixed, the relative positions among the outer ring 31, the inner ring 32 and the rollers 33 of the bearing 3 in the reference base 11 are kept unchanged, so the deformation is born by the adapter base 12 on the other side; in the adapter 12, the change of the length of the large-diameter section 21 causes the change of the distance between the end of the large-diameter section 21 and the inner ring 32 of the bearing 3, and the disc spring 5 is located between the end of the large-diameter section 21 and the inner ring 32, so that the disc spring 5 generates an extension or contraction adaptive change to offset the change of the distance between the end of the large-diameter section 21 and the inner ring 32 of the bearing 3, and further, the relative positions among the outer ring 31, the inner ring 32 and the roller 33 of the bearing 3 in the adapter 12 are kept unchanged.
In conclusion, when the equipment is used, deformation generated by thermal change is counteracted by the disc spring 5 in an adaptive deformation mode, the bearing 3 is protected, the relative positions of the outer ring 31, the inner ring 32 and the roller 33 are kept in an accurate state, transitional abrasion of the bearing 3 caused by deformation is avoided, and the equipment can stably run for a long time and keep high precision.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (9)
1. The utility model provides a lathe high accuracy motion axle, includes base, screw shaft, bearing, the base is equipped with two, the screw shaft includes the major diameter section, locates the path section at major diameter section both ends, and the cover is equipped with bearing and rotatable in locating two bases on the path section, its characterized in that: the bearing comprises an outer ring, an inner ring and a roller, the base is internally provided with an annular convex limiting part which is internally contracted, the outer ring is clamped and positioned between the annular convex limiting part and the limiting end cover, the base comprises a reference seat and an adaptive seat, and the inner ring is clamped and positioned between the limiting end cover and the large-diameter section in the reference seat; in the adaptive seat, the disc spring is sleeved on the small-diameter section, and the disc spring is tightly propped between the end part of the large-diameter section and the inner ring, so that the inner ring is clamped and positioned between the limiting end cover and the disc spring.
2. The machine tool high-precision motion shaft as claimed in claim 1, wherein: the limiting end cover comprises a pressing outer ring, a first jacking inner ring and a locking spiral ring, the pressing outer ring is locked with the base through a bolt and is extruded towards the outer ring, a space for accommodating the first jacking inner ring is formed between the pressing outer ring and the small-diameter section, threads are arranged at the end part of the small-diameter section, the locking spiral ring is arranged on the small-diameter section in a thread fit mode, the first jacking inner ring is sleeved on the small-diameter section and located between the inner ring and the locking spiral ring, and the locking spiral ring rotates and is extruded towards the inner ring through the first jacking inner ring.
3. The machine tool high-precision motion shaft as claimed in claim 1, wherein: the adapter seat is internally provided with a second tightly-jacking inner ring, a space for accommodating the second tightly-jacking inner ring is arranged between the annular protruding limiting part and the small-diameter section, and the second tightly-jacking inner ring is sleeved on the small-diameter section and is positioned between the inner ring and the disc spring.
4. The machine tool high-precision motion shaft as claimed in claim 1, wherein: the first dustproof ring is sleeved on the small-diameter section and located between the end part of the large-diameter section and the disc spring, and the first dustproof ring fills a gap between the adaptive seat and the small-diameter section.
5. The machine tool high-precision motion shaft as claimed in claim 1, wherein: and a second dustproof ring is arranged in the reference seat, sleeved on the large-diameter section and filled in a gap between the reference seat and the large-diameter section.
6. The machine tool high-precision motion shaft as claimed in claim 1, wherein: and an anti-collision block is arranged on one side of the base.
7. The machine tool high-precision motion shaft as claimed in claim 1, wherein: be equipped with the water conservancy diversion hole in the base, the water conservancy diversion hole is extended into in the base by base bottom.
8. A method for operating a kinematic axis, based on the high-precision kinematic axis of the machine tool of any one of claims 1 to 7, characterized in that: comprises that
Calibrating when leaving the factory, assembling and calibrating the bearing in the reference seat and the adaptive seat to accurate positioning, namely, the relative positions of the outer ring, the inner ring and the roller of the bearing are accurate;
in practical use, due to environmental temperature change and equipment operation heat generation, the screw shaft generates a certain amount of deformation due to thermal change, and the length of the large-diameter section is far greater than that of the small-diameter section, so that the deformation generated by the screw shaft is mainly reflected on the change of the length of the large-diameter section; in the adaptation seat, the change of the length of the large-diameter section leads to the change of the distance between the end part of the large-diameter section and the inner ring of the bearing, and the disc spring is positioned between the end part of the large-diameter section and the inner ring, so that the disc spring generates extension or shortening adaptive change to offset the change of the distance between the end part of the large-diameter section and the inner ring of the bearing, and further the relative positions of the outer ring, the inner ring and the roller of the bearing in the adaptation seat are kept unchanged.
9. A method of operating a moving axis according to claim 8, wherein: the specific calibration steps in factory leaving are as follows: installing a screw shaft in a reference seat and an adaptive seat, adjusting the reference seat, namely rotating a locking spiral ring to extrude a first tightly-jacking inner ring so as to finely adjust the position of an inner ring, and adjusting to enable the outer ring, the inner ring and a roller of a bearing in the reference seat to be in accurate positions; and then the adaptation seat is adjusted, namely the locking bolt is rotated to extrude the first tightly-propping inner ring to finely adjust the position of the inner ring, and the disc spring is positioned between the end part of the large-diameter section and the inner ring, so that the disc spring can be extended or contracted adaptively in the adjustment process, the position of the large-diameter section cannot be changed in the adjustment process, and the outer ring, the inner ring and the roller of the bearing in the adaptation seat are positioned at accurate positions in the adjustment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439768.4A CN111720510A (en) | 2020-05-22 | 2020-05-22 | High-precision movement shaft of machine tool and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439768.4A CN111720510A (en) | 2020-05-22 | 2020-05-22 | High-precision movement shaft of machine tool and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111720510A true CN111720510A (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010439768.4A Pending CN111720510A (en) | 2020-05-22 | 2020-05-22 | High-precision movement shaft of machine tool and working method |
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| CN (1) | CN111720510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210164545A1 (en) * | 2014-07-29 | 2021-06-03 | Raytheon Company | Relative Translation System |
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| JP2007211820A (en) * | 2006-02-07 | 2007-08-23 | Nsk Ltd | Ball screw supporting apparatus |
| CN102699767A (en) * | 2012-05-28 | 2012-10-03 | 上海三一精机有限公司 | Thermal deformation automatic compensation mechanism for screw rod and machine tool |
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| CN204524986U (en) * | 2015-03-20 | 2015-08-05 | 大族激光科技产业集团股份有限公司 | A kind of screw rod pre-tensioning device |
| CN204621652U (en) * | 2015-04-09 | 2015-09-09 | 西安巨浪精密机械有限公司 | A kind of leading screw prestretched structure |
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| CN206855099U (en) * | 2017-03-31 | 2018-01-09 | 常州阿奇夏米尔机床有限公司 | A kind of leading screw is pre-stretched structure |
| CN206982262U (en) * | 2017-06-30 | 2018-02-09 | 苏州市台群机械有限公司 | A kind of Longmen machine tool leading screw with pre-stretching structure |
| CN109048448A (en) * | 2018-09-10 | 2018-12-21 | 宁波海天精工股份有限公司 | A kind of lead screw support construction |
| CN110405511A (en) * | 2019-08-28 | 2019-11-05 | 广东润星科技有限公司 | A kind of pre-stretching structure eliminating screw rod thermal stretching and influencing |
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| CN204524986U (en) * | 2015-03-20 | 2015-08-05 | 大族激光科技产业集团股份有限公司 | A kind of screw rod pre-tensioning device |
| CN204621652U (en) * | 2015-04-09 | 2015-09-09 | 西安巨浪精密机械有限公司 | A kind of leading screw prestretched structure |
| CN205660454U (en) * | 2016-06-08 | 2016-10-26 | 山东永华机械有限公司 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
| CN106001636A (en) * | 2016-07-28 | 2016-10-12 | 深圳市创世纪机械有限公司 | Tailstock and numerical control machine tool |
| CN206855099U (en) * | 2017-03-31 | 2018-01-09 | 常州阿奇夏米尔机床有限公司 | A kind of leading screw is pre-stretched structure |
| CN206982262U (en) * | 2017-06-30 | 2018-02-09 | 苏州市台群机械有限公司 | A kind of Longmen machine tool leading screw with pre-stretching structure |
| CN109048448A (en) * | 2018-09-10 | 2018-12-21 | 宁波海天精工股份有限公司 | A kind of lead screw support construction |
| CN110405511A (en) * | 2019-08-28 | 2019-11-05 | 广东润星科技有限公司 | A kind of pre-stretching structure eliminating screw rod thermal stretching and influencing |
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| US20210164545A1 (en) * | 2014-07-29 | 2021-06-03 | Raytheon Company | Relative Translation System |
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Application publication date: 20200929 |