The purpose of this utility model provides a kind of adjustable center distance gear drive cluster head, and it all adopts gear drive, and the adjustable center distance of working shaft is specially adapted to the batch part of many kinds is processed.
The utility model is achieved in that and is provided with the supporting structure that jackshaft (9) is installed on support (12), and an end of jackshaft (9) can be bearing on arbitrary position on this supporting structure.When support is open type, the other end of jackshaft (9) is bearing on the ring (4), ring (4) is enclosed within on the working shaft (5), and be connected with jackshaft (9), working shaft (5) is bearing on the supporting member, supporting member when support is open type is supporting arm (2), and supporting arm (2) can be fixed on arbitrary position of supporting structure.The supporting structure that jackshaft (9) and supporting member are installed can be a groove, or the hole, or the combination in groove and hole.The installation site of so just having realized jackshaft (9) and working shaft (5) is all adjustable, thereby has realized the adjustable center distance of working shaft (5).When support (12) is dust protected, supporting member is dust resistant support plate (22), at this moment have the hole of mounting support plate (22) on the support (12), support plate (22) can be bearing in the hole and can rotate in the hole, jackshaft (9) is bearing in the center of support plate (22), working shaft (5) is bearing on the support plate (22), it is the center rotation with jackshaft (9) that whole support plate can be with working shaft (5), the installation site of so just having realized working shaft (5) is adjustable, thereby has realized the adjustable center distance of working shaft (5).
The utility model can also be made the double base arm configuration of long and short two working shafts (5), also can make supporting arm (2) to enlarge the centre-to-centre spacing supporting arm, can also make the structure with rotation support.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the cutaway view of open type 2 spindle noses.
Fig. 2 is 2 spindle nose fundamental diagrams corresponding to Fig. 1.
Plane when Fig. 3 is the installation of supporting arm (2) symmetry.
Fig. 4 is the supporting arm plan-position figure of supporting arm (2) 4 spindle noses that can only radially move.
Fig. 5 is 2 spindle nose simplified cross-sectional view of dust protected structure.
Fig. 6 has only the 2 spindle nose planes that working shaft is adjustable.
Fig. 7 and Fig. 8 are 2 spindle nose planes with whirligig.
Fig. 9 is the sketch of double base arm.
Figure 10 is that working shaft is the sketch of central shaft.
Figure 11 is the sketch that enlarges the centre-to-centre spacing supporting arm.
Below in conjunction with accompanying drawing, be that example describes working condition of the present utility model in detail with open type 2 spindle noses.
With reference to Fig. 1, Fig. 2, mainshaft gear (17) and idler gear (8) engagement, idler gear (8) can revolve three-sixth turn around mainshaft gear (17), a duplicate gear is formed in idler gear (7), (8), and bearing (not drawing among the figure) is equipped with in inside, and jackshaft (9) is bearing on this bearing.Working gear (6) and idler gear (7) engagement, working gear (6) can revolve three-sixth turn around idler gear again.Centrode when (19) are idler gear (7), (8) adjustment among Fig. 2, idler gear (7), (8) can be fixed on any point on this track.Centrode when (20) being working gear (6) adjustment, working gear (6) can be fixed on any point on the corresponding track by supporting arm.When the change of the center of center tooth wheel (7) and working gear (6), the center distance change of working gear (6), promptly the center distance change of working shaft (5) is made corresponding device thereof by above-mentioned principle, just can realize the adjustable center distance of working shaft (5).
Further specify the structure that realizes above-mentioned operation principle below.
As Fig. 1, by the collar (13) and bolt (14) support (12) is fixed on the machine tool chief axis cover (15), there is main shaft (16) rotatable in the machine tool chief axis cover (15), mainshaft gear (17) is fixed on the main shaft (16), support (12) has cannelure (10), one end bearing of jackshaft (9) is on cannelure (10), and cannelure (10) can keep the centre-to-centre spacing of idler gear (7), (8) and mainshaft gear (17) constant.The other end of jackshaft (9) is bearing on the ring (4), ring (4) is enclosed within on the working shaft (5), working shaft (5) is bearing on the supporting arm (2), on support (12), have T-slot, by the nut (1) in the T-slot (3), supporting arm (2) is fixed on the support, because supporting arm (2) can be fixed on any one position of T-slot (3), and have the slotted hole of adjusting usefulness on the supporting arm (2), and an end of jackshaft (9) can be fixed on any one position of cannelure (10), when the center of adjusting working gear (6) on track during any point, supporting arm (2) can both correspondingly be fixed on the T-slot (3), has so just realized the adjustable center distance of working gear (6).The effect of gusset (18) is that the support (12) that cannelure (10) is cut apart is linked to be an integral body.
Have a supporting arm (2) not draw among Fig. 4, have 4 grooves (31) on the support (12), this groove is to limit supporting arm (2) can only radially move, and this structure is for 4 holes that often will process 4 five equilibriums on circumference, and is easy to adjust.
Supporting member shown in Figure 5 is support plate (22), support plate (22) is bearing on the support (12), support plate has bearing or hole in (22), working shaft (5) can be bearing on bearing or the hole, jackshaft (9) is bearing in the center of support plate (22), it is the center rotation with jackshaft (9) that whole support plate (22) can be with working shaft (5), so just realized the adjustable center distance of working shaft (5), it is fixing with bolt (21) to mix up the back, jackshaft among this figure (9) is non-adjustable structure, two working shafts (5) are adjustable structure, and another effect of support plate (22) is dustproof.
(23) are the working shafts of fixing among Fig. 6, and the structure of support plate (22) is identical with Fig. 5 support plate (22).
Support (12) is housed in the supporting base among Fig. 7 (24), support (12) can rotate in supporting base (24), the line of centres (27) of working shaft (5) and the angle of straight line (25) before rotation as Fig. 7, through clockwise the rotation after as Fig. 8, the rotation back is fixing with screw (26), and its centre-to-centre spacing of 2 working shafts (5) rotation back is constant.Structural adjustment is convenient like this, is applicable to the processing that some has specific (special) requirements.
Cluster head structure more than 3 and operation principle are also described similar with Fig. 1~Fig. 8.
It is adjustable that this cluster head can be made the installation site of some jackshafts (9) and a few thing axle (5), and all nonadjustable form in installation site of other jackshaft (9) and working shaft (5); The installation site that also can make some jackshafts (9) is adjustable, and the installation site of other jackshafts (9) is non-adjustable, and all adjustable form in installation site of working shaft (5).
As Fig. 9, idler gear (7) and two working gears (6) engagement, the working shaft on the left side (5) is a minor axis, the working shaft on the right (5) is a major axis, has so just avoided two working gears (6) to interfere with each other when close.It is more and require the less situation of centre-to-centre spacing of working shaft (5) that this structure is used for the number of axle.
As Figure 10, mainshaft gear (17) is big or small the same with working gear (6), idler gear (7) and this two gears engaged, and the center of working shaft (5) is adjustable to the alignment of shafts and overlaps, and this structure is used for some processing that specific (special) requirements is arranged.
As Figure 11, working gear (6) passes to working shaft (5) to motion by three gears (28), (29), (30), and this structure is used for the situation that needs enlarge working shaft centre-to-centre spacing.Also can make the supporting arm that working gear (6) passes to motion by a plurality of gears working shaft.
More than several structures all can replace the part-structure of the supporting arm (2) of Fig. 1 to be installed on the cluster head, thereby the range of work of cluster head is enlarged.