CN113803428A - High-precision lead screw transmission seat mechanism - Google Patents
High-precision lead screw transmission seat mechanism Download PDFInfo
- Publication number
- CN113803428A CN113803428A CN202110993263.7A CN202110993263A CN113803428A CN 113803428 A CN113803428 A CN 113803428A CN 202110993263 A CN202110993263 A CN 202110993263A CN 113803428 A CN113803428 A CN 113803428A
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- bearing
- screw rod
- bearing sleeve
- lead screw
- body base
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 86
- 210000004907 gland Anatomy 0.000 claims abstract description 77
- 125000006850 spacer group Chemical group 0.000 claims abstract description 40
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 30
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 128
- 238000001816 cooling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000306 component Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 210000003739 neck Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
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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
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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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- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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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
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
Abstract
The invention discloses a high-precision lead screw transmission seat mechanism which comprises a machine tool dragging plate, a front bearing seat, a rear bearing seat, a lead screw, a coupler and a servo motor, wherein the front bearing seat and the rear bearing seat respectively comprise a body base, a bearing sleeve O-shaped sealing ring I, a bearing sleeve O-shaped sealing ring II, an oil inlet and outlet pipe joint, a bearing sleeve flange gland, a flange gland O-shaped sealing ring, a lead screw spacer ring I, a lead screw spacer ring II, a framework oil seal I, a framework oil seal II, a lead screw O-shaped sealing ring I, a lead screw O-shaped sealing ring II, a lead screw locking nut and a locking bolt, a constant-temperature refrigerating oil circulation oil inlet and outlet passage is arranged outside the bearing sleeve, a body base, a bearing sleeve flange gland, a lead screw spacer ring I and a lead screw spacer ring II are all processed by fine grinding, and high-precision matching is realized. The invention aims to solve the technical problems of low precision, unstable precision and the like of the traditional screw rod transmission bearing seat. The improved technical scheme of external constant temperature refrigeration oil supply and high-precision grinding is provided.
Description
Technical Field
The invention relates to the technical field of screw rod transmission, in particular to a high-precision screw rod transmission seat mechanism.
Background
The screw rod transmission mechanism is mainly a transmission mechanism for converting between rotary motion and linear motion, two ends of a screw rod are required to be supported and connected through a bearing during screw rod transmission, a supporting point is required to be arranged at a place where the bearing is arranged, an inner hole supporting point of the bearing is the screw rod, an outer support is a bearing seat in general, and the screw rod transmission bearing seat is an important part for maintaining the precision of the screw rod transmission mechanism.
The screw rod transmission bearing seat is used as a core component of mechanical transmission, is a very successful and mature product after being developed for 10 years at home and abroad, various innovations are layered and not grouped, new innovation breakthroughs are difficult to be made on the form and structure, only the precision is always the industrial difficulty, the style and the structure of the mobile phone are basically the same as those of an automobile and a mobile phone, the mobile phone is changed, and the mobile phone chip is still the technology of domestic neck clamping in the aspects of precision, volume, energy efficiency and the like. The mechanical machine tool can be made by nations with different styles, but the mechanical machine tool is really high in precision or ultrahigh in precision, and is a technology for people to be clamped by necks in China, namely, ultra-precision accessories proposed by the nations producing ultrahigh-end machine tools in Japan in Germany. Mechanical parts, especially high-speed rolling bearings, are most important to obtain stable precision and keep running in a long-term dust-free space; moreover, the bearing is prevented from temperature rise in a loaded operation condition, and expansion caused by heat and contraction caused by cold are prevented, so that the shaft running precision is not stable. In addition, the traditional machining process of the conventional screw rod transmission bearing seat is completed through numerical control machining, and used equipment basically comprises milling, boring, drilling and lathe machining of inner and outer circular workpieces, so that the higher precision requirements on coaxiality, roundness and verticality cannot be guaranteed in the machining process, the high precision is the coaxiality and the parallelism which are less than 0.003MM, but the highest precision is not less than 0.01MM when the high precision is imported into a lathe and a milling machining center, so that the precision of the screw rod transmission bearing seat is greatly reduced, and the better precision is easily lost in the using process.
Aiming at the technical problems, the invention discloses a high-precision screw rod transmission seat mechanism which has the advantages of improving the sealing and dustproof performance of a screw rod transmission bearing seat, well ensuring the bearing to run in a constant-temperature circulating oil-cooled environment, improving the precision and the service life of the screw rod transmission bearing seat, improving the grinding processing process precision and the assembling precision of the screw rod transmission bearing seat and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a screw rod transmission seat mechanism with high precision, and aims to solve the technical problems that a screw rod transmission bearing seat in the prior art cannot ensure that a bearing runs in a dust-free and constant-temperature environment for a long time, and the screw rod transmission bearing seat is low in precision, short in service life and the like.
The invention is realized by the following technical scheme: the invention discloses a high-precision screw rod transmission seat mechanism, which comprises a machine tool dragging plate, a front bearing seat, a rear bearing seat, a screw rod, a coupler and a servo motor, wherein the front bearing seat and the rear bearing seat can be separately and independently used or combined for use;
the front bearing block comprises a body base, a bearing sleeve O-shaped sealing ring I, a bearing sleeve O-shaped sealing ring II, an oil inlet and outlet pipe joint, a bearing sleeve flange gland, a flange gland O-shaped sealing ring, a screw rod spacer ring I, a screw rod spacer ring II, a skeleton oil seal I, a skeleton oil seal II, a screw rod O-shaped sealing ring I, a screw rod O-shaped sealing ring II, a screw rod locking nut and a locking bolt, wherein the body base is a square polygon body, the middle part of the left end of the body base is vertically penetrated for installing a coupler, the middle part of the body base is transversely penetrated left and right by taking a central axis as a center, a bearing sleeve installing cavity is arranged at the right end of the body base, a bearing sleeve spigot step position is arranged at the middle part of the body base, a bearing sleeve installing bolt hole is arranged at the end surface of the bearing sleeve spigot step position, the bearing sleeve is arranged in the bearing sleeve installing cavity, and the bottom of the body base is an installing reference surface, a body base mounting hole is formed in the bottom mounting reference surface of the body base and the top of the body base in a penetrating manner; the bearing sleeve is a cylindrical hollow body, outer diameter walls at two end parts of the bearing sleeve are respectively provided with a first sealing groove, a bearing sleeve O-shaped sealing ring I and a bearing sleeve O-shaped sealing ring II are respectively arranged in the two first sealing grooves, an oil groove is arranged at the middle section of the outer diameter of the bearing sleeve, an oil inlet hole and an oil outlet hole are arranged on the side wall of the body base, the inner ends of the oil inlet hole and the oil outlet hole are respectively communicated with the oil groove, oil inlet and outlet pipe joints are respectively arranged at the outer parts of the oil inlet hole and the oil outlet hole, the bearing is arranged in a bearing installation cavity arranged in the bearing sleeve, a bearing spigot is arranged at the inner end of the bearing sleeve, a skeleton oil seal position I is arranged beside the bearing spigot, a bearing sleeve flange gland is arranged at the outer end of the bearing sleeve, a flange gland installation bolt hole is arranged at the periphery of the end surface of the bearing sleeve flange gland, the bearing sleeve flange gland is a circular hollow body, and a skeleton oil seal position II is arranged at the right side of an inner hole of the bearing sleeve flange gland, a framework oil seal positioning spigot is arranged on the left side of an inner hole of the bearing sleeve flange gland, a second sealing groove is arranged on the outer diameter of the left side of the bearing sleeve flange gland, and an O-shaped sealing ring of the flange gland is arranged in the second sealing groove; the screw rod spacing ring I and the screw rod spacing ring II are both in a circular cavity shape with steps, the screw rod spacing ring I and the screw rod spacing ring II are sleeved on the inner wall of the outer diameter of the end part of a screw rod at intervals and used for pressing a bearing, a framework oil seal I and a framework oil seal II are respectively sleeved in the steps of the outer diameters of the screw rod spacing ring I and the screw rod spacing ring II, the peripheries of the framework oil seal I and the framework oil seal II are respectively positioned in the framework oil seal position I and the framework oil seal position II, a third sealing groove is respectively arranged at the position corresponding to the middle position of the screw rod spacing ring I on the outer diameter wall of the end part of the screw rod and the position corresponding to the middle position of the screw rod spacing ring II on the outer diameter wall of the end part of the screw rod, the screw rod O-shaped sealing ring I and the screw rod O-shaped sealing ring II are respectively arranged in the two third sealing grooves, locking threads are arranged at the tail part of the end part of the screw rod, a screw rod locking nut is screwed and fixed outside the locking threads, and the tail end of the screw rod opposite to a servo motor is also provided with a shaft coupling, the bearing sleeve and the body base, and the bearing sleeve flange gland and the bearing sleeve are fixedly connected through locking bolts;
when the front bearing seat is installed, firstly, the bearing sleeve is taken out and is installed in the bearing, then, after the flange gland O-shaped sealing ring of the flange gland is installed in the outer diameter of the flange gland of the bearing sleeve, then, the bearing sleeve flange gland is fixedly arranged at the outer end part of the bearing sleeve through a locking bolt to lock the bearing, then the whole body is arranged in a bearing sleeve mounting cavity in the body base and is locked by the locking bolt, a screw rod O-shaped sealing ring I and a screw rod O-shaped sealing ring II are arranged in a preprocessed third sealing groove at the tail end of the screw rod, then a screw rod spacing ring I is sleeved into the step position of the end of the screw rod, the screw rod is inserted into the inner hole of the bearing, then a screw rod spacing ring II is sleeved into the bearing, then, sleeving a framework oil seal I and a framework oil seal II, locking a screw rod locking nut, finally installing an oil inlet and outlet pipe joint at the outer ends of an oil inlet hole and an oil outlet hole, and installing a servo motor and a coupler after the whole front bearing seat is installed;
the rear bearing seat has the same other structures as the front bearing seat, and the different structures are that a servo motor fixing seat is not arranged outside a body base of the rear bearing seat, and the rear bearing seat does not need to be provided with a servo motor;
the structure comprises a bearing sleeve mounting cavity, a servo motor mounting spigot, a mounting datum plane at the bottom of a body base, a bearing mounting cavity, an outer diameter wall and an end face of a bearing sleeve, an inner hole wall and an outer diameter side wall of a bearing sleeve flange gland, an inner diameter wall and an outer diameter wall of a lead screw spacer I and an inner diameter wall and an outer diameter wall of a lead screw spacer II are all finely ground by a grinding machine, the precision tolerance of the roundness of the bearing sleeve mounting cavity, the excircle of the bearing sleeve, the bearing mounting cavity, the inner hole of the bearing sleeve flange gland, the inner hole and the excircle of the lead screw spacer I and the inner hole and the roundness of the outer hole of the lead screw spacer II is 0.001-0.008, the verticality between the end face of the body base and the bearing sleeve mounting cavity, the verticality between the end face of the bearing sleeve and the bearing mounting cavity, the verticality between the end face of the bearing sleeve flange gland and the inner hole of the bearing sleeve flange gland, the verticality between the end face of the lead screw spacer I and the inner hole of the lead screw spacer II and the fine verticality between the end face of the lead screw spacer II Ensuring that the errors are within the tolerance range of 0.001-0.008 mm; the accurate error of the perpendicularity between the end face of the servo motor and the bottom face of the body base is within a tolerance range of 0.001-0.008 mm; the coaxiality and parallelism precision of the front bearing seat, the rear bearing seat and the screw rod are within the tolerance range of 0.001-0.008 mm.
Preferably, in order to let the better circulation of cooling oil to improve refrigerated effect, the oil groove is the spiral, and the inner of inlet port and oil outlet communicates with the both ends of oil groove respectively. The oil groove sets to the spiral, thereby make the cooling oil pass through the oil inlet joint and get into from the one end of oil groove, then circulate along spiral oil groove, take away the heat, flow back to in the constant temperature refrigerator from the other end of oil groove through the oil-out joint at last, through the refrigerator after the heat that produces in the carrying of axle, the continuous oil inlet that passes through of pump station of constant temperature refrigeration oil supplies to the driving seat body again and carries out the heat exchange, play and keep stable operating temperature, only under the stable condition of temperature, the bearing, the thermal deformation that produces when the rotatory power of lead screw did can be controlled, invariable precision can just be kept.
Preferably, in order to improve the convenience of installation, body base right-hand member face and both sides face are equallyd divide and are provided with inlet port and oil outlet respectively. During installation, the oil inlet and outlet pipe joints are designed under different working conditions, and space installation interference can occur in practical application. The right end face and the two side faces of the body base are respectively provided with an oil inlet hole and an oil outlet hole, the oil inlet hole and the oil outlet hole can be selectively installed at the outer ends of the oil inlet hole and the oil outlet hole on a proper side wall when space interference occurs, the unused oil inlet hole and the unused oil outlet hole are plugged and sealed through a jackscrew plug after selection, and the installation convenience is improved.
Preferably, in order to improve the fixed mounting precision of the screw rod transmission bearing seat, the body base mounting holes are located on the front side and the rear side of the bearing sleeve mounting cavity, and the front side and the rear side of the bearing sleeve mounting cavity are respectively provided with at least two body base mounting holes. The body base mounting hole is located the entity department of both sides around the axle sleeve installation cavity on the body base, and this both sides structural rigidity is good, and intensity is high, is convenient for add the body base mounting hole, and the both sides are equallyd divide around the axle sleeve installation cavity and do not are provided with the body base mounting hole of being no less than two, decompose the deformation that produces because of pressure for more equipartition, are favorable to improving the precision of whole bearing frame.
Preferably, in order to increase the lubricating effect and reduce the resistance of the screw rod during rotation, high-temperature-resistant grease is pre-embedded in the steps at the peripheries of the screw rod spacing ring I and the screw rod spacing ring II. The pre-buried high temperature resistant grease is used for lubricating the rotation of the screw rod, and has the effects of reducing the resistance when the screw rod rotates, reducing the temperature and prolonging the service life of the oil seal and the screw rod.
Preferably, in order to improve the stability of the screw rod rotation and the precision of the screw rod transmission bearing seat, at least two bearings are fixedly arranged in the bearing installation cavity.
Preferably, in order to improve the precision of the screw drive bearing seat, the bearing bush mounting bolt holes and the flange gland mounting bolt holes are densely distributed and are not less than six. The arrangement of the bearing sleeve mounting bolt holes and the flange gland mounting bolt holes can improve the stress balance of the contact surface when the locking bolt is locked, effectively reduce the deformation of the accessory and improve the mounting precision.
The invention has the following advantages: according to the invention, the O-shaped sealing ring I of the screw rod, the O-shaped sealing ring II of the screw rod and the O-shaped sealing ring of the flange gland are arranged, so that the sealing and dustproof performance of the bearing seat is obviously improved, various oil stains, water and sundries are prevented from entering, and the bearing can be ensured to operate in a dust-free environment for a long time; the invention is provided with a bearing sleeve in the base of the body, the middle part of the outer wall of the bearing sleeve is provided with a spiral oil groove, cooling oil is injected into the oil groove and realizes the circulation and circulation of the cooling oil, the oil groove is arranged in a spiral shape, so that the cooling oil enters from one end of the oil groove through an oil inlet and outlet pipe joint and then circulates along the spiral oil groove to take away heat, finally the cooling oil flows back into a constant temperature refrigerator from the other end of the oil groove through the oil inlet and outlet pipe joint, the heat generated in the shaft carrying process is cooled through the refrigerator, then the constant temperature refrigeration oil is continuously supplied to the oil groove in the bearing seat through an oil inlet hole through a pump station for heat exchange, the stable working temperature is kept, only under the condition of stable temperature, the thermal deformation generated when the bearing and a screw rod rotate to work can be controlled, the constant precision can be kept, and the bearing is effectively ensured to always run in a constant temperature environment, the phenomenon of unstable axial movement precision caused by thermal expansion and cold contraction is avoided; the accurate precision tolerance of the inner diameter wall and the outer diameter wall of the lead screw spacer ring I and the inner diameter wall and the outer diameter wall of the lead screw spacer ring II is 0.001-0.008, the verticality between the end surface of the body base and the bearing sleeve mounting cavity, the verticality between the end surface of the bearing sleeve and the bearing sleeve mounting cavity, the verticality between the end surface of the bearing sleeve flange gland and the inner hole of the bearing sleeve flange gland, the verticality between the end surface of the lead screw spacer ring I and the inner hole of the lead screw spacer ring I, the verticality between the end surface of the lead screw spacer ring I and the inner hole of the lead screw spacer ring II and the verticality between the end surface of the lead screw spacer ring II and the inner hole of the lead screw spacer ring II are accurate The errors are within the tolerance range of 0.001-0.008 mm; the accurate error of the perpendicularity between the end face of the servo motor and the bottom face of the body base is within a tolerance range of 0.001-0.008 mm; the accuracy of the coaxiality and the parallelism of the installation of the front bearing seat, the rear bearing seat and the screw rod is within the tolerance range of 0.001-0.008 mm, so that the accuracy of each component of the screw rod transmission bearing seat and the accuracy of assembly among the components are improved through fine grinding, the stability of the screw rod rotation bearing seat is improved, the abrasion in the rotation process is reduced, and in conclusion, the accuracy and the service life of the screw rod transmission bearing seat are remarkably improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the front bearing block;
FIG. 3 is a front sectional view of the front bearing block;
FIG. 4 is a top cross-sectional view of the front bearing block;
FIG. 5 is a perspective view of the front bearing seat;
FIG. 6 is a cross-sectional view of the base of the body;
FIG. 7 is a cross-sectional view of a bearing housing;
FIG. 8 is a cross-sectional view of a bearing housing flange gland;
FIG. 9 is a schematic perspective view of a gland of a flange of a bearing housing;
FIG. 10 is a cross-sectional view of the lead screw spacer II;
FIG. 11 is an exploded view of the rear bearing block;
FIG. 12 is a perspective view of the rear bearing seat;
FIG. 13 is a cross-sectional view of the rear bearing mount.
In the figure: 1. a machine tool carriage; 2. a front bearing seat; 2-1, a body base; 2-1-1, bearing bush mounting cavity; 2-1-2, a bearing sleeve spigot step position; 2-1-2-1, installing bolt holes on the bearing sleeve; 2-1-3, a body base mounting hole; 2-1-4, oil inlet holes; 2-1-5, oil outlet; 2-2, bearing sleeves; 2-2-1, a first seal groove; 2-2-2, oil groove; 2-2-3, bearing installation cavity; 2-2-4, bearing spigot; 2-2-5, and a framework oil seal position I; 2-3, bearing sleeve O-shaped sealing ring I; 2-4, bearing sleeve O-shaped sealing ring II; 2-5, an oil inlet and outlet pipe joint; 2-6, bearing; 2-7, bearing sleeve flange gland; 2-7-1, mounting bolt holes on a flange gland; 2-7-2, and a framework oil seal position II; 2-7-3, a framework oil seal positioning spigot; 2-7-4, a second seal groove; 2-8, pressing an O-shaped sealing ring by a flange; 2-9, a screw rod space ring I; 2-10, a screw rod spacing ring II; 4-1, a third seal groove; 2-12, framework oil seal I; 2-13, framework oil seal II; 2-14, a screw rod O-shaped sealing ring I; 2-15, a screw rod O-shaped sealing ring II; 2-16, a screw rod locking nut; 2-17, locking bolts; 3. a rear bearing seat; 4. a screw rod; 5. a coupling; 6. a servo motor; 7. a servo motor fixing seat; 7-1, installing a spigot of the servo motor.
Detailed Description
In the description of the present invention, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner" and "outer" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element 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.
Example 1
Embodiment 1 discloses a high-precision screw rod transmission seat mechanism, as shown in fig. 1 and 2, including structures of parts in a machine tool carriage 1, a front bearing seat 2, a rear bearing seat 3, a screw rod 4, a coupler 5 and a servo motor 6 and assembly among the parts, wherein the front bearing seat 2 and the rear bearing seat 3 can be separately and independently used or combined for use, when in combined use, the front bearing seat 2 and the rear bearing seat 3 are respectively and fixedly arranged at the left end and the right end of the top of the machine tool carriage 1, two ends of the screw rod 4 are respectively and insertedly assembled in inner holes of bearings 2-6 arranged in the front bearing seat 2 and the rear bearing seat 3, the servo motor 6 is fixedly arranged on a servo motor fixing seat 7 arranged at the left side of the front bearing seat 2, and the end part of an output shaft of the servo motor 6 is fixedly connected with the end part of the screw rod 4 through the coupler 5; as shown in fig. 3 and 4, a servo motor mounting spigot 7-1 is arranged on the left side of the servo motor fixing seat 7;
as shown in fig. 2, 3, 4 and 5, the front bearing seat 2 comprises a body base 2-1, a bearing sleeve 2-2, a bearing sleeve O-shaped sealing ring I2-3, a bearing sleeve O-shaped sealing ring II 2-4, an oil inlet and outlet pipe joint 2-5 and a bearing 2-6, the bearing sleeve flange gland 2-7, the flange gland O-shaped sealing ring 2-8, the lead screw spacing ring I2-9, the lead screw spacing ring II 2-10, the framework oil seal I2-12, the framework oil seal II 2-13, the lead screw O-shaped sealing ring I2-14, the lead screw O-shaped sealing ring II 2-15, the lead screw locking nut 2-16 and the locking bolt 2-17 are arranged in sequence, the body base 2-1 is a square polygonal body, and the middle part of the left end of the body base 2-1 is vertically penetrated for mounting the coupler 5; as shown in FIG. 6, the middle part of the body base 2-1 is transversely communicated with the left and right sides by taking a central axis as a center, a bearing bush mounting cavity 2-1-1 is arranged at the right end of the body base 2-1, a bearing bush spigot step 2-1-2 is arranged at the middle part of the body base 2-1, and a bearing bush mounting bolt hole 2-1-2-1 is arranged on the end surface of the bearing bush spigot step 2-1-2; as shown in fig. 3 and 6, the bearing sleeve 2-2 is arranged in the bearing sleeve mounting cavity 2-1-1, the bottom of the body base 2-1 is a mounting reference surface, the mounting reference surface at the bottom of the body base 2-1 is provided with a body base mounting hole 2-1-3 through with the top thereof, specifically, the body base mounting hole 2-1-3 is positioned at the front and rear sides of the bearing sleeve mounting cavity 2-1-1, and the front and rear sides of the bearing sleeve mounting cavity 2-1-1 are respectively provided with at least two body base mounting holes 2-1-3; as shown in fig. 3 and 7, the bearing sleeve 2-2 is a cylindrical hollow body, the outer diameter walls of the two end parts of the bearing sleeve 2-2 are respectively provided with a first sealing groove 2-2-1, the bearing sleeve O-shaped sealing ring i 2-3 and the bearing sleeve O-shaped sealing ring ii 2-4 are respectively arranged in the two first sealing grooves 2-2-1, and the middle part of the outer diameter of the bearing sleeve 2-2 is provided with an oil groove 2-2-2; as shown in fig. 5, the side wall of the body base 2-1 is provided with an oil inlet 2-1-4 and an oil outlet 2-1-5, the inner ends of the oil inlet 2-1-4 and the oil outlet 2-1-5 are respectively communicated with the oil groove 2-2-2, the outer parts of the oil inlet 2-1-4 and the oil outlet 2-1-5 are respectively provided with an oil inlet and outlet pipe joint 2-5, specifically, the oil groove 2-2-2 is spiral, the inner ends of the oil inlet 2-1-4 and the oil outlet 2-1-5 are respectively communicated with the two ends of the oil groove 2-2-2, and the right end surface and the two side surfaces of the body base 2-1 are respectively provided with the oil inlet 2-1-4 and the oil outlet 2-1-5; as shown in fig. 3, the bearings 2-6 are installed in the bearing installation cavities 2-2-3 arranged in the bearing sleeves 2-2, and specifically, at least two bearings 2-6 are fixedly arranged in the bearing installation cavities 2-2-3; as shown in FIG. 7, a bearing spigot 2-2-4 is arranged at the inner end of the bearing sleeve 2-2, and a framework oil seal position I2-2-5 is arranged beside the bearing spigot 2-2-4; as shown in fig. 3, 8 and 9, a bearing sleeve flange gland 2-7 is arranged at the outer end of a bearing sleeve 2-2, flange gland mounting bolt holes 2-7-1 are arranged on the periphery of the end face of the bearing sleeve flange gland 2-7, the number of the bearing sleeve mounting bolt holes 2-1-2-1 and the number of the flange gland mounting bolt holes 2-7-1 are all densely distributed and are not less than six, the bearing sleeve flange gland 2-7 is a circular hollow body, a framework oil seal position II 2-7-2 is arranged on the right side of an inner hole of the bearing sleeve flange gland 2-7, a framework oil seal positioning spigot 2-7-3 is arranged on the left side of the inner hole of the bearing sleeve flange gland 2-7, a second seal groove 2-7-4 is arranged on the outer diameter of the left side of the bearing sleeve flange gland 2-7, the flange gland O-shaped sealing ring 2-8 is arranged in the second sealing groove 2-7-4; as shown in fig. 3 and 10, the lead screw space ring i 2-9 and the lead screw space ring ii 2-10 are both in a circular cavity shape with steps, high temperature resistant grease is pre-embedded in the steps at the peripheries of the lead screw space ring i 2-9 and the lead screw space ring ii 2-10, the lead screw space ring i 2-9 and the lead screw space ring ii 2-10 are sleeved on the inner wall of the end part outer diameter of the lead screw 4 for pressing the bearing 2-6 at intervals, the framework oil seal i 2-12 and the framework oil seal ii 2-13 are respectively sleeved in the steps at the outer diameters of the lead screw space ring i 2-9 and the lead screw space ring ii 2-10, and the peripheries of the framework oil seal i 2-12 and the framework oil seal ii 2-13 are respectively located in the framework oil seal i 2-2-5 and the framework oil seal ii 2-7-2; as shown in fig. 2 and 3, a third sealing groove 4-1 is respectively arranged on the outer diameter wall of the end part of the screw rod 4 corresponding to the middle position of the screw rod spacer ring I2-9 and the outer diameter wall of the end part of the screw rod 4 corresponding to the middle position of the screw rod spacer ring II 2-10, a screw rod O-shaped sealing ring I2-14 and a screw rod O-shaped sealing ring II 2-15 are respectively arranged in the two third sealing grooves 4-1, the tail part of the end head of the screw rod 4 is provided with a locking thread, a screw rod locking nut 2-16 is fixed outside the locking thread in a threaded manner, the tail end of the screw rod 4 opposite to the servo motor 6 is also provided with a coupling connecting axle center, the bearing sleeve 2-2 and the body base 2-1, and the bearing sleeve flange gland 2-7 and the bearing sleeve 2-2 are fixedly connected through locking bolts 2-17;
as shown in figure 2, when a front bearing seat 2 is installed, a bearing sleeve 2-2 is taken and installed into a bearing 2-6, a flange gland O-shaped sealing ring 2-8 is installed on the outer diameter of a bearing sleeve flange gland 2-7, then the bearing sleeve flange gland 2-7 is fixedly installed at the outer end part of the bearing sleeve 2-2 through a locking bolt 2-17 to lock the bearing 2-6, then the whole bearing sleeve is installed into a bearing sleeve installation cavity 2-1-1 in a body base 2-1 and locked by the locking bolt 2-17, a screw rod O-shaped sealing ring I2-14 and a screw rod O-shaped sealing ring II 2-15 are installed in a prefabricated third sealing groove 4-1 at the tail end of a screw rod 4, then a screw rod spacing ring I2-9 is sleeved into a step position of the end of the screw rod 4, then a screw rod 4 penetrates into an inner hole of a bearing 2-6, then a screw rod spacing ring II 2-10 is sleeved, then a framework oil seal I2-12 and a framework oil seal II 2-13 are sleeved, then a screw rod locking nut 2-16 is locked, finally an oil inlet and outlet pipe joint 2-5 is arranged at the outer end of an oil inlet 2-1-4 and an oil outlet 2-1-5, and a servo motor 6 and a coupler 5 are arranged after the whole front bearing seat 2 is installed;
as shown in fig. 11, 12 and 13, the rear bearing seat 3 has the same structure as the front bearing seat 2, but has a structure that the servo motor fixing seat 7 is not arranged outside the body base of the rear bearing seat 3, and the rear bearing seat 3 does not need to be provided with the servo motor 6;
as shown in the figures 2 and 11, a bearing bush mounting cavity 2-1-1, a servo motor mounting spigot 7-1, a mounting reference surface at the bottom of a body base 2-1, a bearing mounting cavity 2-2-3, an outer diameter wall and an end surface of the bearing bush 2-2, an inner hole wall and an outer diameter side wall of a bearing bush flange gland 2-7, an inner diameter wall and an outer diameter wall of a lead screw spacer ring I2-9 and an inner diameter wall and an outer diameter wall of a lead screw spacer ring II 2-10 are finely ground by a grinding machine, precision tolerances of the bearing bush mounting cavity 2-1-1, an outer circle of the bearing bush 2-2, the bearing mounting cavity 2-2-3, an inner hole of the bearing bush flange gland 2-7, an inner hole and an outer circle of the lead screw spacer ring I2-9, and a true roundness of the inner hole and an outer circle of the lead screw spacer ring II 2-10 are all within a range of 0.001-0.008, the accurate errors of the verticality between the end face of the body base 2-1 and the bearing sleeve installation cavity 2-1, the verticality between the end face of the bearing sleeve 2-2 and the bearing installation cavity 2-2-3, the verticality between the end face of the bearing sleeve flange gland 2-7 and the inner hole of the bearing sleeve flange gland 2-7, the verticality between the end face of the lead screw spacing ring I2-9 and the inner hole of the lead screw spacing ring I2-9 and the verticality between the end face of the lead screw spacing ring II 2-10 and the inner hole of the lead screw spacing ring II 2-10 are all within the tolerance range of 0.001-0.008 mm; the accurate error of the perpendicularity between the end face of the servo motor 6 and the bottom face of the body base 2-1 is within the tolerance range of 0.001-0.008 mm; the coaxiality and parallelism precision of the front bearing seat 2, the rear bearing seat 3 and the screw rod 4 are within the tolerance range of 0.001-0.008 mm.
The principle of the invention is as follows: firstly, in the processing process, a bearing sleeve mounting cavity 2-1-1, a servo motor mounting spigot 7-1, a mounting reference surface at the bottom of a body base 2-1, a bearing mounting cavity 2-2-3, an outer diameter wall and an end surface of the bearing sleeve 2-2, an inner cavity and an outer diameter side wall of a bearing sleeve flange gland 2-7, an inner diameter wall and an outer diameter wall of a lead screw spacer ring I2-9 and an inner diameter wall and an outer diameter wall of a lead screw spacer ring II 2-10 are all finely ground by a grinding machine, so that the precision tolerance of the true roundness of the bearing sleeve mounting cavity 2-1-1, the excircle of the bearing sleeve 2-2, the bearing mounting cavity 2-2-3, the inner hole of the bearing sleeve flange gland 2-7, the inner hole and the excircle of the lead screw spacer ring I2-9 and the inner hole and the excircle of the lead screw spacer ring II 2-10 is all in the range of 0.001-0.008, the accurate errors of the verticality between the end face of the body base 2-1 and the bearing sleeve installation cavity 2-1, the verticality between the end face of the bearing sleeve 2-2 and the bearing installation cavity 2-2-3, the verticality between the end face of the bearing sleeve flange gland 2-7 and the inner hole of the bearing sleeve flange gland 2-7, the verticality between the end face of the lead screw spacing ring I2-9 and the inner hole of the lead screw spacing ring I2-9 and the verticality between the end face of the lead screw spacing ring II 2-10 and the inner hole of the lead screw spacing ring II 2-10 are all within the tolerance range of 0.001-0.008 mm; the accurate error of the perpendicularity between the end face of the servo motor 6 and the bottom face of the body base 2-1 is within the tolerance range of 0.001-0.008 mm; the accuracy of the coaxiality and the parallelism of the front bearing seat 2, the rear bearing seat 3 and the screw rod 4 is within the tolerance range of 0.001-0.008 mm, so that the accuracy of each component in the front bearing seat 2 and the rear bearing seat 3 and the accuracy of assembly between the components are improved through fine grinding, the stability of a screw rod transmission seat mechanism is improved, the abrasion in the rotating process is reduced, then, in the assembling process, the bearing sleeve mounting bolt holes 2-1-2-1 and the flange gland mounting bolt holes 2-7-1 are densely distributed and are not less than six, the arrangement of the plurality of bearing sleeve mounting bolt holes 2-1-2-1 and the flange gland mounting bolt holes 2-7-1 can improve the balance degree of the stress of a contact surface when the locking bolts 2-17 are locked, and the deformation of accessories is effectively reduced, the mounting precision is improved, finally, in the operation process, the corresponding position of the end part of the screw rod 4 and the middle position of the screw rod spacer ring I2-9 and the corresponding position of the end part of the screw rod 4 and the middle position of the screw rod spacer ring II 2-10 are respectively provided with a third sealing groove 4-1, a screw rod O-shaped sealing ring I2-14 and a screw rod O-shaped sealing ring II 2-15 are respectively arranged in the two third sealing grooves 4-1, the left outer diameter of a bearing sleeve flange gland 2-7 is provided with a second sealing groove 2-7-4, a flange gland O-shaped sealing ring 2-8 is arranged in the second sealing groove 2-7-4, thereby the sealing and dust-proof performance of the front bearing seat and the rear bearing seat is obviously improved through the arrangement of a plurality of O-shaped sealing rings, the entering of various oil stains, water and sundries is prevented, and the long-term operation of the bearing 2-6 in a dust-free environment is ensured, the sealing grade of the front bearing seat and the rear bearing seat is improved, and the sealing grade of the inner parts of the front bearing seat and the rear bearing seat can reach IP68 grade sealing; in the invention, the middle section of the outer diameter of the bearing sleeve 2-2 is provided with an oil groove 2-2-2, the side wall of the body base 2-1 is provided with an oil inlet hole 2-1-4 and an oil outlet hole 2-1-5, the inner ends of the oil inlet hole 2-1-4 and the oil outlet hole 2-1-5 are respectively communicated with the oil groove 2-2-2, the outer parts of the oil inlet hole 2-1-4 and the oil outlet hole 2-1-5 are respectively provided with an oil inlet and outlet pipe joint 2-5, the oil groove 2-2-2 is spiral, the oil groove 2-2-2 is arranged into a spiral shape, so that cooling oil enters from one end of the oil groove 2-2-2 through the oil inlet and outlet pipe joint 2-5 and then flows along the spiral oil groove 2-2-2, the heat is taken away, the oil flows back into the constant-temperature refrigerator from the other end of the oil groove 2-2-2 through the oil inlet and outlet pipe joint 2-5, the heat generated in the bearing carrier is cooled through the refrigerator, then the constant-temperature refrigeration oil is continuously supplied to the oil groove 2-2-2 in the front bearing seat and the rear bearing seat through the pump station through the oil inlet hole 2-1-4 to perform heat exchange, so that the stable working temperature is kept, the thermal deformation generated when the bearing 2-6 and the screw rod 4 rotate to act can be controlled only under the condition of stable temperature, the constant precision can be kept, and the phenomenon that the shaft movement precision is unstable due to thermal contraction is avoided; in conclusion, the invention has the advantages of improving the sealing and dustproof performance of the front bearing seat and the rear bearing seat, well ensuring the bearing to run in the environment of constant temperature circulating oil cooling, improving the precision and the service life of the front bearing seat and the rear bearing seat, improving the grinding processing precision and the assembly precision of the front bearing seat and the rear bearing seat, improving the precision and the service life of the screw rod transmission seat mechanism and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A high-precision screw rod transmission seat mechanism is characterized by comprising structures of all parts of a machine tool carriage, a front bearing seat, a rear bearing seat, a screw rod, a coupler and a servo motor and assembly among the parts, the front bearing seat and the rear bearing seat can be used separately and independently or combined, and when combined, the front bearing seat and the rear bearing seat are respectively and fixedly arranged at the left end and the right end of the top of the machine tool carriage, two ends of the screw rod are respectively inserted into inner holes of bearings arranged in the front bearing seat and the rear bearing seat, the servo motor is fixedly arranged on a servo motor fixing seat arranged on the left side of the front bearing seat, the end part of an output shaft of the servo motor is fixedly connected with the end part of the lead screw through the coupler, and a servo motor mounting spigot is arranged on the left side of the servo motor fixing seat;
the front bearing block comprises a body base, a bearing sleeve O-shaped sealing ring I, a bearing sleeve O-shaped sealing ring II, an oil inlet and outlet pipe joint, a bearing sleeve flange gland, a flange gland O-shaped sealing ring, a screw rod spacer ring I, a screw rod spacer ring II, a skeleton oil seal I, a skeleton oil seal II, a screw rod O-shaped sealing ring I, a screw rod O-shaped sealing ring II, a screw rod locking nut and a locking bolt, wherein the body base is a square polygonal body, the middle part of the left end of the body base is vertically penetrated for installing a coupler, the middle part of the body base is transversely penetrated left and right by taking a central axis as a center, a bearing sleeve installing cavity is arranged at the right end of the body base, a bearing sleeve spigot step position is arranged at the middle part of the body base, a bearing sleeve installing bolt hole is arranged at the end face of the bearing sleeve spigot step position, and the bearing sleeve is arranged in the bearing sleeve installing cavity, the bottom of the body base is an installation reference surface, the installation reference surface at the bottom of the body base is communicated with the top of the body base to form a body base installation hole, the bearing sleeve is a cylindrical hollow body, first seal grooves are respectively arranged on the outer diameter walls of two end positions of the bearing sleeve, a bearing sleeve O-shaped seal ring I and a bearing sleeve O-shaped seal ring II are respectively arranged in the two first seal grooves, an oil groove is arranged in the middle section of the outer diameter of the bearing sleeve, an oil inlet hole and an oil outlet hole are arranged on the side wall of the body base, the inner ends of the oil inlet hole and the oil outlet hole are respectively communicated with the oil groove, the outer parts of the oil inlet hole and the oil outlet hole are respectively provided with an oil inlet and outlet pipe joint, the bearing is installed in a bearing installation cavity arranged in the bearing sleeve, the inner end of the bearing sleeve is provided with a bearing spigot, and the side of the bearing spigot is provided with a skeleton oil seal position I, the bearing sleeve flange gland is arranged at the outer end of the bearing sleeve, flange gland mounting bolt holes are formed in the periphery of the end face of the bearing sleeve flange gland, the bearing sleeve flange gland is a circular hollow body, a framework oil seal position II is arranged on the right side of an inner hole of the bearing sleeve flange gland, a framework oil seal positioning spigot is arranged on the left side of the inner hole of the bearing sleeve flange gland, a second sealing groove is formed in the outer diameter of the left side of the bearing sleeve flange gland, and an O-shaped sealing ring of the flange gland is arranged in the second sealing groove; the screw rod spacing ring I and the screw rod spacing ring II are both in a circular cavity shape with steps, the screw rod spacing ring I and the screw rod spacing ring II are sleeved on the outer diameter of the end part of the screw rod at intervals and are used for pressing the inner wall of the bearing, the framework oil seal I and the framework oil seal II are respectively sleeved in the steps of the outer diameters of the screw rod spacing ring I and the screw rod spacing ring II, the peripheries of the framework oil seal I and the framework oil seal II are respectively positioned in the framework oil seal position I and the framework oil seal position II, a third sealing groove is respectively arranged on the wall of the outer diameter of the end part of the screw rod corresponding to the middle position of the screw rod spacing ring I and the corresponding position of the middle position of the screw rod spacing ring II on the wall of the outer diameter of the end part of the screw rod, and the screw rod O-shaped sealing ring I and the screw rod O-shaped sealing ring II are respectively arranged in the two third sealing grooves, the tail part of the end of the screw rod is provided with a locking thread, the screw rod locking nut is fixed outside the locking thread in a threaded manner, the tail end of the screw rod opposite to the servo motor is also provided with a coupling connection axis, and the bearing sleeve is fixedly connected with the body base and the bearing sleeve flange gland through the locking bolt;
when the front bearing seat is installed, the bearing sleeve is taken and installed into the bearing, then the flange gland O-shaped sealing ring is installed on the outer diameter of the flange gland of the bearing sleeve, then the flange gland of the bearing sleeve is fixedly installed at the outer end part of the bearing sleeve through the locking bolt to lock the bearing, then the bearing is integrally installed in the bearing sleeve installation cavity in the body base and locked by the locking bolt, a screw rod O-shaped sealing ring I and a screw rod O-shaped sealing ring II are installed in a third pre-processed sealing groove at the tail end of the screw rod, then a screw rod spacing ring I is sleeved into the step position of the end of the screw rod, the screw rod penetrates into an inner hole of the bearing, then a screw rod spacing ring II is sleeved into the third sealing groove, then a framework oil seal I and a framework oil seal II are sleeved into the third sealing groove, then a screw rod locking nut is locked into the third sealing groove, and finally the oil inlet and outlet joints are installed at the outer ends of the oil inlet and the oil outlet, after the whole front bearing seat is installed, the servo motor and the coupler are installed;
the rear bearing seat has the same other structure as the front bearing seat, and has a different structure that a servo motor fixing seat is not arranged outside a body base of the rear bearing seat, and the rear bearing seat does not need to be provided with a servo motor;
bearing housing installation cavity servo motor installation tang the installation reference face of body base bottom the bearing installation cavity the outer diameter wall and the terminal surface of bearing housing, the interior pore wall and the external diameter lateral wall of bearing housing flange gland, the inside and outside diameter wall of lead screw spacer I and the inside and outside diameter wall of lead screw spacer II all carry out the finish grinding processing through the grinding machine, the bearing housing installation cavity the excircle of bearing housing, the bearing housing installation cavity the hole of bearing housing flange gland, the hole and the excircle of lead screw spacer I and the precision tolerance of the true circularity of the hole of lead screw spacer II and excircle all is in 0.001 ~ 0.008 the scope, the terminal surface of body base with hang down straightness between the bearing housing installation cavity, the terminal surface of bearing housing flange gland with hang down straightness between the gland of bearing housing flange bore, The accurate errors of the perpendicularity between the end face of the lead screw space ring I and the inner hole of the lead screw space ring I and the perpendicularity between the end face of the lead screw space ring II and the inner hole of the lead screw space ring II are within the tolerance range of 0.001-0.008 mm; the accurate error of the perpendicularity between the end face of the servo motor and the bottom face of the body base is within a tolerance range of 0.001-0.008 mm; the coaxiality and parallelism precision of the front bearing seat, the rear bearing seat and the lead screw are within the tolerance range of 0.001-0.008 mm.
2. The screw rod transmission seat mechanism with high precision as claimed in claim 1, wherein the oil groove is spiral, and the inner ends of the oil inlet and the oil outlet are respectively communicated with two ends of the oil groove.
3. The high-precision lead screw transmission seat mechanism according to claim 1, wherein the right end face and the two side faces of the body base are respectively provided with an oil inlet and an oil outlet.
4. The high-precision lead screw transmission seat mechanism according to claim 1, wherein the body base mounting holes are located on the front and rear sides of the bearing sleeve mounting cavity, and at least two body base mounting holes are respectively formed on the front and rear sides of the bearing sleeve mounting cavity.
5. The screw rod transmission seat mechanism with high precision as claimed in claim 1, wherein high temperature grease is pre-buried in the steps at the periphery of the screw rod spacing ring I and the screw rod spacing ring II.
6. A high accuracy lead screw drive base mechanism as claimed in claim 1, wherein not less than two of said bearings are fixedly disposed within said bearing mounting cavity.
7. The high-precision lead screw drive seat mechanism according to claim 1, wherein the bearing bush mounting bolt holes and the flange gland mounting bolt holes are densely distributed and are not less than six.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110993263.7A CN113803428A (en) | 2021-08-26 | 2021-08-26 | High-precision lead screw transmission seat mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110993263.7A CN113803428A (en) | 2021-08-26 | 2021-08-26 | High-precision lead screw transmission seat mechanism |
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| CN113803428A true CN113803428A (en) | 2021-12-17 |
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| CN202110993263.7A Pending CN113803428A (en) | 2021-08-26 | 2021-08-26 | High-precision lead screw transmission seat mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114211182A (en) * | 2021-12-25 | 2022-03-22 | 苏州华亚智能科技股份有限公司 | Welding positioning device and welding method for controlling concentricity |
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| CN104139320A (en) * | 2014-07-04 | 2014-11-12 | 南京理工大学 | Device for cooling angular contact ball bearing of feed system |
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