CN205415124U - Center goes out water and extends head - Google Patents
Center goes out water and extends head Download PDFInfo
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- CN205415124U CN205415124U CN201620196055.9U CN201620196055U CN205415124U CN 205415124 U CN205415124 U CN 205415124U CN 201620196055 U CN201620196055 U CN 201620196055U CN 205415124 U CN205415124 U CN 205415124U
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- extension head
- ring
- knife
- main shaft
- endoporus
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Abstract
The utility model discloses a center goes out water and extends head is including extending the head nail of forging a knife, the teper -shank, box and install the first main shaft of extension in the box, the outside cover of teper -shank is equipped with the taper sleeve, install a O type sealing washer between taper sleeve and the teper -shank, extend the pull rod that links to each other about being provided with in the first main shaft in proper order, forge a knife the pole with draw the claw, the cover is equipped with the dish spring on the pull rod, extend the connection that first tail end of forging a knife the nail set firmly the in -band hole, the forge a knife hole aperture looks adaptation of pole of the external diameter and the lathe owner axial tension claw of connection, lathe owner axial tension claw is forged a knife the bottom of the hole of pole and is installed the 2nd O type sealing washer of twice, the utility model discloses a careful delicate water -proof design and drainage design, the cooling water that the center of guaranteeing goes out water can get into the cutter hole in ne -leakage ground, even if extend head work under extremely special abominable behavior, during the cooling water can not get into the fore bearing and rear bearing that extends first main shaft yet, when effectively protecting the bearing, has guaranteed the reliability that center goes out water and extends head worked.
Description
Technical field
This utility model relates to machine tool accessories Extension Head technical field, specifically a kind of central water outlet Extension Head.
Background technology
Extension Head with central water outlet structure is similar to the general structure of common Extension Head automatically, by an Extension Head main shaft by front and back bearings support, it is fixed in Extension Head casing, the spline housing that main shaft tail end spline connects is connected with machine tool chief axis key block, machine tool chief axis power is transferred to Extension Head main shaft, completes the machining functions such as cutting.For the Extension Head of band central water outlet structure, focusing on of design is waterproof, prevents the cooling water overflow of band pressure to main shaft outside and entering bearing, disc spring etc..Owing to central water outlet hydraulic pressure is big, once seal approach is the most proper, can lead to disastrous consequence.The Extension Head of existing band central water outlet structure, waterproof effect is the best, such as, it is threaded connection between its taper shank and pull bar, this screw thread cannot play sealing function, and actual by the O RunddichtringO sealing installed between taper shank and pull bar, its sealing effectiveness is limited, for there being the coolant of certain pressure, it may occur that Seepage.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art; a kind of central water outlet Extension Head is provided; by waterproofing design and the Drainage Design of careful precision; enable central water outlet cooling water ne-leakage enter cutter endoporus; while the fore bearing and rear bearing of effectively protection Extension Head main shaft; the reliability that central water outlet Extension Head works can be ensured, it is ensured that machine finish and efficiency.
nullThe technical scheme that the above-mentioned technical problem of this utility model solution is used is: a kind of central water outlet Extension Head，Forge a knife nail including Extension Head、Taper shank、Casing and the Extension Head main shaft being arranged in described casing，The outer sheath of described taper shank is provided with tapered sleeve，Oneth O RunddichtringO is installed between described tapered sleeve and described taper shank，Described Extension Head main shaft is by fore bearing and rear bearing support，Described fore bearing and described rear bearing are arranged between described Extension Head main shaft and described casing，The rear end spline of described Extension Head main shaft connects spline housing，Described spline housing is connected with machine tool chief axis key block，The pull bar being connected the most up and down it is provided with in described Extension Head main shaft、Forge a knife bar and pulling claw，It is arranged with disc spring on described pull bar，Threaded with described taper shank in stretching into the endoporus of described taper shank in the rear end of described pull bar，The forge a knife tail end of nail of described Extension Head is installed with the connection mouth of band endoporus，The forge a knife endoporus aperture of bar of the described external diameter connecting mouth and machine tool chief axis pulling claw is suitable，The forge a knife bottom of endoporus of bar of described machine tool chief axis pulling claw is provided with twice the 2nd O RunddichtringO.
In central water outlet Extension Head of the present utility model, the forge a knife tail end of nail of Extension Head is installed with the connection mouth of band endoporus, when Extension Head normally works, connect mouth insert machine tool chief axis pulling claw forge a knife bar endoporus in, and connect mouth and machine tool chief axis pulling claw and forge a knife and seal by being arranged on forge a knife twice the 2nd O RunddichtringO of bottom of endoporus of bar of machine tool chief axis pulling claw between bar, oneth O RunddichtringO is installed between tapered sleeve and taper shank simultaneously, above-mentioned Extension Head nail waterproofing design of forging a knife can ensure that the cooling water No leakage ground of the band pressure (about 2MPa) in machine tool chief axis pulling claw hole enters Extension Head and forges a knife in nail.When machine tool chief axis is forged a knife, machine tool chief axis pulling claw forge a knife masthead Extension Head forge a knife nail step surface, it is ensured that forge a knife smoothly.
The tail end of described Extension Head main shaft is provided with spacer shell, described spacer shell is set on described taper shank, described spacer shell includes threaded portion setting up and down and location division, threaded with described tapered sleeve in described threaded portion, the rear end centering of the endoporus of described location division and described Extension Head main shaft, the outer ring of described tapered sleeve is provided with the U-shaped sealing ring of opening upwards, having annular gap between tapered sleeve and spindle taper hole described after installation but do not contact, described U-shaped sealing ring is for ensureing the sealing effectiveness between tapered sleeve and spindle taper hole.On the basis of Extension Head forges a knife nail waterproofing design composition first waterproof construction, spacer shell, U-shaped sealing ring and an O RunddichtringO constitute second waterproof construction, can be further ensured that waterproof effect, safe and reliable.Because if lathe uses for a long time, machine tool chief axis pulling claw forges a knife twice the 2nd O RunddichtringO that the bottom of endoporus of bar installs likely can be damaged or come off, first waterproof construction is caused to lose efficacy, in this case, second waterproof construction still can play preferable waterproof action, oneth O RunddichtringO can ensure that the sealing between tapered sleeve and taper shank, U-shaped sealing ring can ensure the sealing between tapered sleeve and tapered bore of machine tool spindle.Owing to threadeding with tapered sleeve in the threaded portion on spacer shell, therefore tapered sleeve high and low position can be regulated during installation and debugging accordingly, tapered sleeve regulation to press close to spindle taper hole but both not in contact with position, can test by smearing the methods such as red lead powder when regulation, U-shaped sealing ring opening upwards, can ensure top leak down the cooling water come can enter the groove of U-shaped sealing ring in and make the outer ring of U-shaped sealing ring outwards rise, between tapered sleeve and tapered bore of machine tool spindle, play more excellent sealing effectiveness.Between tapered sleeve and spindle taper hole, there is annular gap after installation but discontiguous design, be to prevent from, during installing and using, location occurred, making U-shaped sealing ring play its sealing function as far as possible simultaneously.
Being equipped with holding screw on the sidewall of described tapered sleeve, described spacer shell is fixed together by described holding screw with described tapered sleeve.After tapered sleeve high and low position mixes up, tighten holding screw and fix tapered sleeve and spacer shell, tapered sleeve high and low position is carried out spacing, prevent spacer shell from returning pine, it is ensured that installation accuracy and reliability.
Compress between the rear end of described taper shank and described pull bar and transition pad is installed, longitudinal hole is offered in described transition pad, the upper and lower side of described longitudinal hole endoporus with the endoporus of described taper shank and described pull bar respectively is connected, the top of described transition pad offers the first seal groove, the bottom of described transition pad is mounted on the 3rd O RunddichtringO in offering the second seal groove, the first described seal groove and the second described seal groove.Although first waterproof construction and second waterproof construction have been able to play preferable waterproof effect before this, but owing to being thread connecting mode between taper shank and pull bar, the risk of infiltration is still had after life-time service, therefore endoporus waterproofing design is the most crucial, it is therefore intended that prevent the band pressure cooling water of centre bore from oozing out from the gap of threaded connection place.This utility model offers the first seal groove by a top, bottom offers the transition pad of the second seal groove and can effectively solve endoporus waterproof problem, this endoporus waterproofing design, by being respectively mounted the 3rd O RunddichtringO in the first seal groove and the second seal groove, enters the endoporus of pull bar with making the cooling water ne-leakage in taper shank.
Between front end and the described Extension Head main shaft of described pull bar, the 4th O RunddichtringO is installed.The endoporus waterproofing design that transition pad and the 3rd O RunddichtringO are constituted actually constitutes the 3rd road waterproof construction, and the 4th O RunddichtringO set up between the front end of pull bar and Extension Head main shaft can make the cooling water accidentally breaking through the 3rd road waterproof construction will not pour in down a chimney back in disc spring installation place.
Described spline housing is arranged on the outside of described spacer shell, 5th O RunddichtringO is installed between described spline housing and described spacer shell, the outer edge of described spline housing is provided with down convex upper water retaining brim, the outside of described spline housing is provided with waterproof ring, described upper waterproof ring is arranged between described spline housing and described casing, between described upper waterproof ring and described casing, the 6th O RunddichtringO is installed, the inner side of described upper waterproof ring is provided with the upper rain visor of epirelief, described upper rain visor is positioned at the inner side of described upper water retaining brim, it is formed with the first water storage space between described upper rain visor and described casing, the some upper leaking hole being connected with the first described water storage space is offered on described Extension Head casing, described upper rain visor constitutes labyrinth structure with described upper water retaining brim.When lathe unclamps Extension Head, machine tool chief axis pulling claw forge a knife bar endoporus in remaining coolant can drop down, therefore for central water outlet Extension Head, discharge structure design is the most crucial.In Extension Head of the present utility model, labyrinth structure that 5th O RunddichtringO, the 6th O RunddichtringO, upper rain visor and upper water retaining brim are constituted and the first water storage space and upper leaking hole constitute first discharge structure, 5th O RunddichtringO can ensure to cool down water will not be toward stream in the endoporus of Extension Head main shaft, the labyrinth structure that upper rain visor and upper water retaining brim are constituted is conducive to making cooling water derive smoothly, the cooling water of inflow can be imported the first water storage space by the 6th O RunddichtringO smoothly, and by some upper leaking holes by outside cooling water drainage to casing.
The lower drip ring of the spacer effect that has been arranged above of described rear bearing, described lower drip ring be arranged above locking nut, the outer edge of described lower drip ring is provided with down convex lower water retaining brim, the outside of described lower drip ring is provided with lower waterproof ring, the inner side of described lower waterproof ring is provided with the lower rain visor of epirelief, it is formed with the second water storage space between described lower waterproof ring and described casing, the some lower leaking hole being connected with the second described water storage space is offered on described Extension Head casing, described lower rain visor constitutes labyrinth structure with described lower water retaining brim.Labyrinth structure that lower rain visor and lower water retaining brim are constituted and the second water storage space and lower leaking hole constitute second discharge structure.Second discharge structure plays preventive effect, in the case of the first water storage space abruptly enters a large amount of coolant, second discharge structure can play a small amount of drainage, the labyrinth structure that lower rain visor and lower water retaining brim are constituted ensure that dirty cooling water enter the second water storage space in and be discharged to outside casing by some lower leaking holes, by first discharge structure and the dual-drainage of second discharge structure, drainage effect is good, it is possible to realize the effective protection to upper bearing (metal) and lower bearing.
The lower section of described fore bearing is provided with outer labyrinth ring and interior labyrinth ring, described outer labyrinth ring and described interior labyrinth ring and constitutes labyrinth structure.Outer labyrinth ring and interior labyrinth ring can realize the reliable protection to fore bearing further from front end.
Compared with prior art; the utility model has the advantage of: the central water outlet Extension Head that this utility model provides; by waterproofing design and the Drainage Design of careful precision; ensure that the cooling water of central water outlet can enter cutter endoporus in ne-leakage ground; even if Extension Head works in the case of the most special harsh; cooling water also will not enter in fore bearing and the rear bearing of Extension Head main shaft; while effectively protection bearing; ensure that the reliability that central water outlet Extension Head works, it is ensured that machine finish and efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation after central water outlet Extension Head and the machine tool chief axis of embodiment assembles；
Fig. 2 is enlarged drawing at A in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
nullThe central water outlet Extension Head of embodiment 1，As shown in the figure，Forge a knife nail 1 including Extension Head、Taper shank 2、Casing 3 and the Extension Head main shaft 4 being arranged in casing 3，The outer sheath of taper shank 2 is provided with tapered sleeve 21，Oneth O RunddichtringO 51 is installed between tapered sleeve 21 and taper shank 2，Extension Head main shaft 4 is by fore bearing 41 and rear bearing 42 support，Fore bearing 41 and rear bearing 42 are arranged between Extension Head main shaft 4 and casing 3，The rear end spline of Extension Head main shaft 4 connects spline housing 43，Spline housing 43 is connected with machine tool chief axis key block 61，The pull bar 44 being connected the most up and down it is provided with in Extension Head main shaft 4、Forge a knife bar 45 and pulling claw 46，Disc spring 47 it is arranged with on pull bar 44，Threaded with taper shank 2 in stretching into the endoporus of taper shank 2 in the rear end of pull bar 44，The forge a knife tail end of nail 1 of Extension Head is installed with the connection mouth 11 of band endoporus，Connect the external diameter of mouth 11 and the forge a knife endoporus aperture of bar 62 of machine tool chief axis pulling claw is suitable，The forge a knife bottom of endoporus of bar 62 of machine tool chief axis pulling claw is provided with twice the 2nd O RunddichtringO 52.
In embodiment 1, the tail end of Extension Head main shaft 4 is provided with spacer shell 7, spacer shell 7 is set on taper shank 2, spacer shell 7 includes threaded portion 71 setting up and down and location division 72, threaded with tapered sleeve 21 in threaded portion 71, the rear end centering of the endoporus of location division 72 and Extension Head main shaft 4, holding screw 22 it is equipped with on the sidewall of tapered sleeve 21, spacer shell 7 is fixed together by holding screw 22 with tapered sleeve 21, the outer ring of tapered sleeve 21 is provided with the U-shaped sealing ring 23 of opening upwards, between tapered sleeve 21 with spindle taper hole 63, there is annular gap 64 after installation but do not contact, U-shaped sealing ring 23 is for ensureing the sealing effectiveness between tapered sleeve 21 and spindle taper hole 63.
In embodiment 1, compress between the rear end of taper shank 2 and pull bar 44 and transition pad 8 is installed, longitudinal hole 83 is offered in transition pad 8, the upper and lower side of longitudinal hole 83 is connected with the endoporus of taper shank 2 and the endoporus of pull bar 44 respectively, the top of transition pad 8 offers the first seal groove 81, the bottom of transition pad 8 offers the second seal groove 82, is mounted on the 3rd O RunddichtringO 53, is provided with the 4th O RunddichtringO 54 between front end and the Extension Head main shaft 4 of pull bar 44 in the first seal groove 81 and the second seal groove 82.
nullThe central water outlet Extension Head of embodiment 2，As shown in the figure，Forge a knife nail 1 including Extension Head、Taper shank 2、Casing 3 and the Extension Head main shaft 4 being arranged in casing 3，The outer sheath of taper shank 2 is provided with tapered sleeve 21，Oneth O RunddichtringO 51 is installed between tapered sleeve 21 and taper shank 2，Extension Head main shaft 4 is by fore bearing 41 and rear bearing 42 support，Fore bearing 41 and rear bearing 42 are arranged between Extension Head main shaft 4 and casing 3，The rear end spline of Extension Head main shaft 4 connects spline housing 43，Spline housing 43 is connected with machine tool chief axis key block 61，The pull bar 44 being connected the most up and down it is provided with in Extension Head main shaft 4、Forge a knife bar 45 and pulling claw 46，Disc spring 47 it is arranged with on pull bar 44，Threaded with taper shank 2 in stretching into the endoporus of taper shank 2 in the rear end of pull bar 44，The forge a knife tail end of nail 1 of Extension Head is installed with the connection mouth 11 of band endoporus，Connect the external diameter of mouth 11 and the forge a knife endoporus aperture of bar 62 of machine tool chief axis pulling claw is suitable，The forge a knife bottom of endoporus of bar 62 of machine tool chief axis pulling claw is provided with twice the 2nd O RunddichtringO 52.
In embodiment 2, the tail end of Extension Head main shaft 4 is provided with spacer shell 7, spacer shell 7 is set on taper shank 2, spacer shell 7 includes threaded portion 71 setting up and down and location division 72, threaded with tapered sleeve 21 in threaded portion 71, the rear end centering of the endoporus of location division 72 and Extension Head main shaft 4, holding screw 22 it is equipped with on the sidewall of tapered sleeve 21, spacer shell 7 is fixed together by holding screw 22 with tapered sleeve 21, the outer ring of tapered sleeve 21 is provided with the U-shaped sealing ring 23 of opening upwards, between tapered sleeve 21 with spindle taper hole 63, there is annular gap 64 after installation but do not contact, U-shaped sealing ring 23 is for ensureing the sealing effectiveness between tapered sleeve 21 and spindle taper hole 63.
In embodiment 2, compress between the rear end of taper shank 2 and pull bar 44 and transition pad 8 is installed, longitudinal hole 83 is offered in transition pad 8, the upper and lower side of longitudinal hole 83 is connected with the endoporus of taper shank 2 and the endoporus of pull bar 44 respectively, the top of transition pad 8 offers the first seal groove 81, the bottom of transition pad 8 offers the second seal groove 82, is mounted on the 3rd O RunddichtringO 53, is provided with the 4th O RunddichtringO 54 between front end and the Extension Head main shaft 4 of pull bar 44 in the first seal groove 81 and the second seal groove 82.
In embodiment 2, spline housing 43 is arranged on the outside of spacer shell 7, 5th O RunddichtringO 55 is installed between spline housing 43 and spacer shell 7, the outer edge of spline housing 43 is provided with down convex upper water retaining brim 31, the outside of spline housing 43 is provided with waterproof ring 32, upper waterproof ring 32 is arranged between spline housing 43 and casing 3, between upper waterproof ring 32 and casing 3, the 6th O RunddichtringO 56 is installed, the inner side of upper waterproof ring 32 is provided with the upper rain visor 321 of epirelief, upper rain visor 321 is positioned at the inner side of water retaining brim 31, the first water storage space 33 it is formed with between upper rain visor 321 and casing 3, the some upper leaking hole 34 being connected with the first water storage space 33 is offered on Extension Head casing 3, upper rain visor 321 constitutes labyrinth structure with upper water retaining brim 31；The lower drip ring 35 of the spacer effect that has been arranged above of rear bearing 42, lower drip ring 35 be arranged above locking nut 39, the outer edge of lower drip ring 35 is provided with down convex lower water retaining brim 351, the outside of lower drip ring 35 is provided with lower waterproof ring 36, the inner side of lower waterproof ring 36 is provided with the lower rain visor 361 of epirelief, the second water storage space 37 it is formed with between lower waterproof ring 36 and casing 3, offering the some lower leaking hole 38 being connected with the second water storage space 37 on Extension Head casing 3, lower rain visor 361 constitutes labyrinth structure with lower water retaining brim 351；The lower section of fore bearing 41 is provided with outer labyrinth ring 48 and interior labyrinth ring 49, and outer labyrinth ring 48 and interior labyrinth ring 49 constitute labyrinth structure.
The installation and debugging of the central water outlet Extension Head of above example need to be carried out step by step: first, will extend over head forge a knife nail 1 dismounting, only sealed by tapered sleeve waterproofing design (i.e. first waterproof construction), adjust tapered sleeve 21 installation site, ensure the sealing effectiveness of U-shaped sealing ring 23, now can be judged the sealing effectiveness of U-shaped sealing ring 23 by the flow of the cooling water that upper leaking hole 34 flows out, if it is decided that sealing effectiveness is qualified, is screwed by holding screw 22；Secondly, change lathe main shaft pulling claw to forge a knife bar 62, twice the 2nd O RunddichtringO 52 is installed, and Extension Head is installed forges a knife nail 1, test Extension Head forge a knife nail 1 waterproof effect, under normal circumstances, upper leaking hole 34 be there will be no and be cooling water flow out of, because by this waterproofing design at two of first waterproof construction and second waterproof construction, cooling water is completely sealed in the centre bore of Extension Head；Finally, observe lower leaking hole 38 with or without cooling water flow out of, flow out if any liquid, illustrate that the 3rd O RunddichtringO 53 in transition pad 8 does not play sealing effectiveness, what this was likely due between pull bar 44 and tapered sleeve 21 threaded is not screwed into the end, cause transition pad 8 not pushed down completely to cause, now the screw thread between pull bar 44 and tapered sleeve 21 should be screwed into the end.
After the central water outlet Extension Head of above example is installed, when normally working, connect mouth 11 insert machine tool chief axis pulling claw forge a knife bar 62 endoporus in, and connect mouth 11 and machine tool chief axis pulling claw and forge a knife and seal by being arranged on forge a knife twice the 2nd O RunddichtringO 52 of bottom of endoporus of bar 62 of machine tool chief axis pulling claw between bar 62, being provided with an O RunddichtringO 51 between tapered sleeve 21 and taper shank 2, above-mentioned Extension Head nail 1 waterproofing design of forging a knife can ensure that the cooling water No leakage ground of the band pressure (about 2MPa) in machine tool chief axis pulling claw hole enters Extension Head and forges a knife in nail 1 simultaneously；On the basis of Extension Head forges a knife nail 1 waterproofing design composition first waterproof construction, spacer shell 7, U-shaped sealing ring 23 and an O RunddichtringO 51 constitute second waterproof construction, waterproof effect can be further ensured that, safe and reliable, because if lathe uses for a long time, machine tool chief axis pulling claw forges a knife twice the 2nd O RunddichtringO 52 that the bottom of endoporus of bar 62 installs likely can be damaged or come off, first waterproof construction is caused to lose efficacy, in this case, second waterproof construction still can play preferable waterproof action, oneth O RunddichtringO 51 can ensure the sealing between tapered sleeve 21 and taper shank 2, U-shaped sealing ring 23 can ensure the sealing between tapered sleeve 21 and tapered bore of machine tool spindle 63.
On the basis of the preferable waterproof effect of aforementioned first waterproof construction and second waterproof construction, this utility model Extension Head also has endoporus waterproofing design, the first seal groove 81 is offered by a top, bottom offers the transition pad 8 of the second seal groove 82 and effectively solves endoporus waterproof problem, this endoporus waterproofing design is by being respectively mounted the 3rd O RunddichtringO 53 in the first seal groove 81 and the second seal groove 82, enter the endoporus of pull bar 44 with making the cooling water ne-leakage in taper shank 2, the band pressure cooling water preventing centre bore oozes out from the gap of taper shank 2 with pull bar 44 threaded connection place.
Due to when lathe unclamps Extension Head, machine tool chief axis pulling claw forge a knife bar 62 endoporus in remaining coolant can drop down, therefore, except waterproofing design, this utility model Extension Head is also devised with Drainage Design at two: first discharge structure, by the 5th O RunddichtringO 55, 6th O RunddichtringO 56, upper rain visor 321 and upper water retaining brim 31 are constituted, 5th O RunddichtringO 55 can ensure to cool down water will not be toward stream in the endoporus of Extension Head main shaft 4, the labyrinth structure that upper rain visor 321 and upper water retaining brim 31 are constituted is conducive to making cooling water derive smoothly, the cooling water of inflow can be imported the first water storage space 33 by the 6th O RunddichtringO 56 smoothly, and by some upper leaking holes 34 by outside cooling water drainage to casing 3；Second discharge structure, the labyrinth structure being made up of with lower water retaining brim 351 lower rain visor 361 and the second water storage space 37 and lower leaking hole 38 are constituted, in the case of the first water storage space 33 abruptly enters a large amount of coolant, second discharge structure can play a small amount of drainage, the labyrinth structure that lower rain visor 361 and lower water retaining brim 351 are constituted ensure that dirty cooling water enter the second water storage space 37 in and be discharged to outside casing 3 by some lower leaking holes 38, by first discharge structure and the dual-drainage of second discharge structure, drainage effect is good, it is capable of the effective protection to upper bearing (metal) and lower bearing.Further, outer labyrinth ring 48 and interior labyrinth ring 49 can realize the reliable protection to fore bearing 41 further from front end.
Claims (8)
- null1. a central water outlet Extension Head，Forge a knife nail including Extension Head、Taper shank、Casing and the Extension Head main shaft being arranged in described casing，The outer sheath of described taper shank is provided with tapered sleeve，Oneth O RunddichtringO is installed between described tapered sleeve and described taper shank，Described Extension Head main shaft is by fore bearing and rear bearing support，Described fore bearing and described rear bearing are arranged between described Extension Head main shaft and described casing，The rear end spline of described Extension Head main shaft connects spline housing，Described spline housing is connected with machine tool chief axis key block，The pull bar being connected the most up and down it is provided with in described Extension Head main shaft、Forge a knife bar and pulling claw，It is arranged with disc spring on described pull bar，Threaded with described taper shank in stretching into the endoporus of described taper shank in the rear end of described pull bar，It is characterized in that the forge a knife tail end of nail of described Extension Head is installed with the connection mouth of band endoporus，The forge a knife endoporus aperture of bar of the described external diameter connecting mouth and machine tool chief axis pulling claw is suitable，The forge a knife bottom of endoporus of bar of described machine tool chief axis pulling claw is provided with twice the 2nd O RunddichtringO.
- A kind of central water outlet Extension Head the most according to claim 1, it is characterized in that the tail end of described Extension Head main shaft is provided with spacer shell, described spacer shell is set on described taper shank, described spacer shell includes threaded portion setting up and down and location division, threaded with described tapered sleeve in described threaded portion, the rear end centering of the endoporus of described location division and described Extension Head main shaft, the outer ring of described tapered sleeve is provided with the U-shaped sealing ring of opening upwards, between tapered sleeve and spindle taper hole described after installation, there is annular gap but do not contact, described U-shaped sealing ring is for ensureing the sealing effectiveness between tapered sleeve and spindle taper hole.
- A kind of central water outlet Extension Head the most according to claim 2, it is characterised in that being equipped with holding screw on the sidewall of described tapered sleeve, described spacer shell is fixed together by described holding screw with described tapered sleeve.
- 4. according to a kind of central water outlet Extension Head according to any one of claim 1-3, it is characterized in that compressing between the rear end of described taper shank and described pull bar transition pad is installed, longitudinal hole is offered in described transition pad, the upper and lower side of described longitudinal hole endoporus with the endoporus of described taper shank and described pull bar respectively is connected, the top of described transition pad offers the first seal groove, the bottom of described transition pad is mounted on the 3rd O RunddichtringO in offering the second seal groove, the first described seal groove and the second described seal groove.
- A kind of central water outlet Extension Head the most according to claim 4, it is characterised in that be provided with the 4th O RunddichtringO between front end and the described Extension Head main shaft of described pull bar.
- null6. according to a kind of central water outlet Extension Head described in Claims 2 or 3，It is characterized in that described spline housing is arranged on the outside of described spacer shell，5th O RunddichtringO is installed between described spline housing and described spacer shell，The outer edge of described spline housing is provided with down convex upper water retaining brim，The outside of described spline housing is provided with waterproof ring，Described upper waterproof ring is arranged between described spline housing and described casing，Between described upper waterproof ring and described casing, the 6th O RunddichtringO is installed，The inner side of described upper waterproof ring is provided with the upper rain visor of epirelief，Described upper rain visor is positioned at the inner side of described upper water retaining brim，It is formed with the first water storage space between described upper rain visor and described casing，The some upper leaking hole being connected with the first described water storage space is offered on described Extension Head casing，Described upper rain visor constitutes labyrinth structure with described upper water retaining brim.
- A kind of central water outlet Extension Head the most according to claim 6, it is characterized in that the lower drip ring of the spacer effect that has been arranged above of described rear bearing, described lower drip ring be arranged above locking nut, the outer edge of described lower drip ring is provided with down convex lower water retaining brim, the outside of described lower drip ring is provided with lower waterproof ring, the inner side of described lower waterproof ring is provided with the lower rain visor of epirelief, it is formed with the second water storage space between described lower waterproof ring and described casing, the some lower leaking hole being connected with the second described water storage space is offered on described Extension Head casing, described lower rain visor constitutes labyrinth structure with described lower water retaining brim.
- A kind of central water outlet Extension Head the most according to claim 7, it is characterised in that the lower section of described fore bearing is provided with outer labyrinth ring and interior labyrinth ring, described outer labyrinth ring and described interior labyrinth ring and constitutes labyrinth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620196055.9U CN205415124U (en) | 2016-03-15 | 2016-03-15 | Center goes out water and extends head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620196055.9U CN205415124U (en) | 2016-03-15 | 2016-03-15 | Center goes out water and extends head |
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| CN205415124U true CN205415124U (en) | 2016-08-03 |
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| CN201620196055.9U Withdrawn - After Issue CN205415124U (en) | 2016-03-15 | 2016-03-15 | Center goes out water and extends head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666241A (en) * | 2016-03-15 | 2016-06-15 | 宁波海天精工股份有限公司 | Extending head with center discharging water |
| CN112775713A (en) * | 2020-12-15 | 2021-05-11 | 宁波海天精工股份有限公司 | Accessory head main shaft center water outlet structure |
| CN113798917A (en) * | 2021-09-13 | 2021-12-17 | 深圳市速锋科技股份有限公司 | Center water outlet electric spindle broach mechanism and method for detecting air tightness of inner cavity of center water outlet electric spindle broach mechanism |
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2016
- 2016-03-15 CN CN201620196055.9U patent/CN205415124U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666241A (en) * | 2016-03-15 | 2016-06-15 | 宁波海天精工股份有限公司 | Extending head with center discharging water |
| CN105666241B (en) * | 2016-03-15 | 2017-10-10 | 宁波海天精工股份有限公司 | A kind of central water outlet Extension Head |
| CN112775713A (en) * | 2020-12-15 | 2021-05-11 | 宁波海天精工股份有限公司 | Accessory head main shaft center water outlet structure |
| CN113798917A (en) * | 2021-09-13 | 2021-12-17 | 深圳市速锋科技股份有限公司 | Center water outlet electric spindle broach mechanism and method for detecting air tightness of inner cavity of center water outlet electric spindle broach mechanism |
| CN113798917B (en) * | 2021-09-13 | 2022-12-09 | 深圳市速锋科技股份有限公司 | Center water outlet electric spindle broach mechanism and method for detecting air tightness of inner cavity of center water outlet electric spindle broach mechanism |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20171010 |