A kind of polygon milling attachmentTechnical field
The present invention relates to a kind of polygons of the valve body surfaces such as the manufacture field of the valve bodies such as valve inside more particularly to valve insideMilling attachment.
Background technology
In the processing of the valve bodies such as valve inside, it is sometimes desirable to which a certain section of periphery is processed into polygon, particularly six sidesShape is to form the structure coordinated with spanner or meet other demands.In the prior art, processing polygon uses single cutter moreThe surface of polygon is processed one by one, when being processed each surface, needs to reposition, it is thus easy to increaseError, and it is less efficient.
Invention content
It is a primary object of the present invention to provide a kind of polygon milling attachment, the device is when processing polygon, to moreThe surface of side shape can Continuous maching, do not need to be positioned every time, on the one hand improve machining accuracy, on the other hand carry yetHigh production efficiency.
To achieve the above objectives, the technical solution adopted by the present invention is：A kind of polygon milling attachment, it is outer including tubularShell can be rotatably set in the rotating base being coaxially disposed in shell and with shell, can be rotatably set on rotating baseFirst rotating shaft and the second shaft and be separately positioned on first rotating shaft and the second shaft separate rotating base one end two cutters,The parallel central axis with rotating base of first rotating shaft and the second shaft and relative to it is described it is central axial symmetrically, in instituteIt states and the internal gear coaxial with shell is provided on outer casing inner wall, be both provided in first rotating shaft and the second shaft and nibbled with internal gearThe gear of conjunction, each cutter include ontology to be mounted in first rotating shaft and the second shaft and relative in describedMultiple blades that mandrel line radially extends, the blade of each blade extend along the direction for being parallel to central axis, eachMultiple blades on cutter are evenly distributed on same circumference.
Preferably, two gears in first rotating shaft and the second shaft are mutually wrong along the direction for being parallel to central axisIt opens.
Preferably, first rotating shaft and the second shaft are arranged on rotating base by the clutch shaft bearing of two coaxial arrangementsOn.
Preferably, the stabilizing ring with central axis coaxial is being provided with relative to the two gears side opposite with rotating baseAnd retainer ring, be respectively arranged with the two through hole passed through for first rotating shaft and the second shaft on the stabilizing ring, the retainer ring withOuter casing screw connects, and the stabilizing ring is partially disposed at radially between retainer ring and the end face of shell.
Preferably, the first rotating shaft and the second shaft are coordinated by the second bearing and stabilizing ring of two coaxial arrangements.
Preferably, the lower end of the outer ring of the second bearing is resisted against on stabilizing ring, and the lower end of inner ring is resisted against first turnOn axis or the corresponding shaft shoulder of the second shaft, the upper end of outer ring is resisted against in the first fixing nut being connect with through hole whorl,The upper end of inner ring is resisted against in the second fixing nut being connect with first rotating shaft or the second shaft thread.
Compared with prior art, the invention has the advantages that：
The polygon milling attachment can continuously milling be up to reaching scheduled milling effect, during milling notIt needs to reposition, ensure that machining accuracy, while provide processing efficiency.
Description of the drawings
Fig. 1 and 2 is stereogram according to a preferred embodiment of the present invention
Fig. 3 is sectional view according to a preferred embodiment of the present invention
Fig. 4 is the structure chart of shell according to a preferred embodiment of the present invention
Fig. 5 is the structure chart of first rotating shaft according to a preferred embodiment of the present invention
Fig. 6 is the structure chart of rotating base according to a preferred embodiment of the present invention
Fig. 7 is the structure chart of Cutting tool installation manner according to a preferred embodiment of the present invention
Specific embodiment
It is described below to disclose the present invention so that those skilled in the art can realize the present invention.It is excellent in being described belowEmbodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
As shown in figs. 1-7, a kind of polygon milling attachment, the shell 1 including tubular are placed coaxially in shell 1It columnar rotating base 2,7 and second shaft 8 of first rotating shaft being removably secured on rotating base 2 and is separately fixed atTwo cutters 9 of 2 one end of separate rotating base of 7 and second shaft 8 of first rotating shaft.The shell 1 and rotating base 2 can be oppositeRotation specifically, connects to reduce with respect to the friction for sliding generation between shell 1 and rotating base 2 by two bearings 12.
It is provided with to receive two axis receiving slits 21 of 7 and second shaft 8 of first rotating shaft on rotating base 2, described in twoThe parallel axis with rotating base 2 of axis of axis receiving slit 21, and it is symmetrical relative to the axis of rotating base 2.It is describedThe one end of 7 and second shaft 8 of first rotating shaft far from cutter 9 is inserted into corresponding axis receiving slit 21.Specifically, first rotating shaft 7 is insertedEnter to one end in corresponding axis receiving slit 21 and coordinated by two bearings 72 with the side wall of corresponding axis receiving slit 21, secondOne end that shaft 8 is inserted into corresponding axis receiving slit 21 is coordinated by two bearings 82 with the side wall of corresponding axis receiving slit 21,Friction between 7 and second shaft 8 of first rotating shaft and rotating base 2, the opposing party can be reduced by 72 and 82 one side of bearingFace can reduce the shaking of 7 and second shaft 8 of first rotating shaft.
It has been coaxially disposed first gear 71 and second gear 81 respectively in 7 and second shaft 8 of first rotating shaft, whenAfter 7 and second shaft 8 of first rotating shaft is inserted into corresponding axis receiving slit 21, the first gear 71 is with second gear 81 in axisIt mutually staggers upwards.The internal gear for being provided on the madial wall of shell 1 while being engaged with first gear 71 and second gear 8111, in this way when rotating base 2 drives 7 and second shaft 8 of first rotating shaft to revolve round the sun around the axis of rotating base 2, due to internal toothWheel 11 is engaged with first gear 71 and second gear 81,7 and second shaft 8 of first rotating shaft around respective axis rotation and thenIt can realize the milling of polygon.Specifically, the first gear 71 is integrally formed with first rotating shaft 7, the second gear 81It is integrally formed with the second shaft 8, the internal gear 11 is integrally formed with shell 1, and the width of the internal gear 11 should can be protectedCard first gear 71 and second gear 81 can still be engaged in the case where being staggered with internal gear 11.
In order to ensure 7 and second shaft of first rotating shaft, 8 further stability, the phase in 7 and second shaft 8 of first rotating shaftThe opposite side of first gear 71 and second gear 81 is arranged with jointly relative to 1 rotatable stabilizing ring 3 of shell, steadyDetermine to be respectively arranged with the through-hole being pierced by for 7 and second shaft 8 of first rotating shaft on ring 3,7 and second shaft 8 of first rotating shaftThe through-hole for installing one end from the stabilizing ring 3 of cutter 9 passes through.Matched between the first rotating shaft 7 and stabilizing ring 3 by two bearings 73It closes, is coordinated between the second shaft 8 and stabilizing ring 3 by two bearings 83.The stabilizing ring 3 is pressed against shell 1 by retainer ring 4On the end face of respective side, the retainer ring 4 is threadedly coupled with shell 1, can adjust the end of retainer ring 4 and the respective side of shell 1The distance between face with ensure stabilizing ring 3 can normally rotate while, larger shaking will not occur.
In order to facilitate the installation of bearing 73 and 83, one end of the inside of the stabilizing ring 3 is provided with to against bearing 73With the inner end of 83 outer rings against ring 31, the inner end of the inner ring of the bearing 73 and 83 is resisted against 7 and second shaft 8 of first rotating shaftThe shaft shoulder on.The outer end of the outer ring of the bearing 73 and 83 is resisted against in the first fixing nut 32, first fixing nut 32,First fixing nut 32 and the sidewall thread of the through-hole of stabilizing ring 3 coordinate and then can realize the outer ring to bearing 73 and 83Outer end against.The inner end of the outer ring of most bearings 73 and 83 is resisted against in the second fixing nut 33, and described second fixes spiral shellMother 33 respectively with 7 and second shaft of first rotating shaft, 8 thread fitting.
Mounting flange 5 is provided in one end of the separate cutter 9 of shell 1, the shell 1 is fixed to by mounting flange 5Can not opposite shell 1 rotate structure on.One end far from cutter 9 is connected with rotary flange 6, the rotation on rotating base 2Turned flange 6 with transmission devices such as rotatable shafts connecting with revolution and rotation with cutter 9.
The cutter 9 includes being mounted on the circular ontology 91 in 7 or second shaft 8 of first rotating shaft and equably setsMultiple blades 92 on the circumferential surface of ontology 91 are put, are provided with blade on the end face of the separate ontology 91 of each blade 92, instituteBlade is stated along the axis direction direction of rotating base 2 to extend in order to which the side to workpiece is processed.It is as shown in the figure, eachThe tool of cutter 9 can process hexagon there are three blade 92 in this way, when each cutter 9 tool is there are two during blade 92, can processGo out quadrangle.
When in use, between the workpiece such as valve inside to be processed being moved to two cutters 9 along the axis of rotating base 2,Transmission device drive rotating base 2 rotate so that drives two cutters, 9 one side around rotating base 2 axis rotation, on one side aroundThe axis rotation of itself, by the polygon that needs can be processed after the milling of a period of time.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industryPersonnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present inventionPrinciple, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation andImprovement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and itsEquivalent defines.