Background technology
Cutter tower be the core component on Digit Control Machine Tool, and swinging hydraulic turret is the automatic tool changer of numerically controlled lathe.Swinging hydraulic turret has housing, in housing, there is circular cylindrical cavity, before having in cavity, bring out out the cutter axis of housing, housing is interior, the excircle of cutter axis has annular piston, the front end of cutter axis is connected with movable end fluted disc and cutterhead successively, the front end of housing has the stiff end fluted disc that can be meshed with movable end fluted disc, the back segment of cutter axis is connected with the hydraulic rotating drive unit of cutter axis, hydraulic rotating drive unit has hydraulic motor, on the power output shaft of hydraulic motor, there is rotation clutch tooth, on cutter axis, have the driven gear being meshed with rotation clutch tooth.
Numerically controlled lathe in use, on cutterhead, be fixed with the required a plurality of cutters of different manufacturing procedures, movable end fluted disc and stiff end fluted disc are in engagement, cutterhead maintains static, a cutter on cutterhead is fixed on operating position exactly, when numerically controlled lathe in use needs tool changing tool, the annular piston first promoting on the cutter axis in the annular hydraulic cylinder of hydraulic turret travels forward vertically, drive cutter axis and cutterhead to move vertically, make movable end fluted disc on cutterhead depart from the engagement with stiff end fluted disc, then with the rotation of fluid motor-driven cutter axis, first allow new cutter used in next procedure of processing tentatively be decided to be in desired location, with annular hydraulic cylinder, promote the annular piston motion backward vertically on cutter axis again, allow movable end fluted disc and stiff end fluted disc on cutterhead reply engagement, compress end-toothed disc, cutterhead maintains static, allow next procedure of processing new cutter used be fixed on accurately operating position.
In hydraulic turret, how accurately and rapidly next procedure of processing new cutter Primary Location used in desired location, reduce and produce time, be the important step of raising labour productivity.
In the prior art, in the hydraulic control oil circuit of hydraulic turret, the hydraulic control oil circuit that cutter axis is seesawed, to the hydraulic control oil circuit of the forward and reverse rotation of hydraulic motor be the discrete hydraulic control oil circuit with three control valves to the hydraulic control oil circuit of hydraulic-driven alignment pin stretching motion, while implementing motion by step, by step, realize above-mentioned motion by controller and a plurality of control element transfer control signal.Because hydraulic pressure transfer signal has delayed-action, making next procedure of processing new cutter positioning used is not very high in the speed of desired location yet, causes that to produce time long, and labor productivity is not very high.
And the size of annular piston is larger in prior art, the power on acting on is a little less, is unfavorable for control and the saving of cost.
In addition, if in process of production, if thereby when having program setting mistake or external strength shock lathe to cause lathe to occur to collide, cutter axis and axis hole can cause damage owing to being subject to the impact of moment.According to rough Statistics, the economic loss that every lathe brings because of error every year the chances are 4%-8% that lathe is worth.
Summary of the invention
The object of this invention is to provide a kind of brake locate mode cutter tower, so that solve the above-mentioned problems in the prior art.
In order to achieve the above object, concrete solution of the present invention is to provide a kind of brake locate mode cutter tower, described brake locate mode cutter tower comprises fixed body, rotor and brake block, described brake block is arranged between described fixed body and rotor and with described fixed body and is fixedly connected with, between described fixed body and described brake block, be provided with pipeline, the pipeline opening of described pipeline is arranged on the surface of described fixed body.
Preferably, described brake block and described fixed body are by being welded and fixed.
Preferably, on described fixed body, be provided with guide groove, described guide groove is positioned at the surface of described fixed body and described tube contacts.
Preferably, described guide groove is thread groove or groove.
Preferably, described pipeline is oil line pipe.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
1, the present invention is owing to only having rotor, brake block and fixed body, and brake block and fixed body be fixed connection structure, without increasing seal, no matter in sealing property or cost control, has greatly and improves.
2, the present invention is braked and is replaced clutch tooth by use, can when lathe occurs to collide, high the receiving in Dao Ta center impact rear a large amount of displacement that produces, and lays down the impact that moment brings, thereby can protect the miscellaneous part of lathe impaired.
3, use the impaired brake locate mode cutter tower of the present invention, when occurring to collide, only need again make the exchange of cutter tower once just can automatically recover precision, without maintenance, because the angle that cutter tower rotates is to control by the absolute coordinate of servo motor, precision is accurate.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the use status architecture schematic diagram of brake locate mode cutter tower of the present invention the first embodiment.
Fig. 2 is the structure for amplifying schematic diagram of brake locate mode cutter tower of the present invention in the first embodiment.
The present invention proposes a kind of brake locate mode cutter tower 6, described brake locate mode cutter tower 6 comprises fixed body 8, rotor 10 and brake block 9, described brake block 9 is arranged between described fixed body 8 and rotor 10 and with described fixed body 8 and is fixedly connected with, between described fixed body 8 and described brake block 9, be provided with pipeline 12, the oil-in 10 of described pipeline 12 is arranged on the surface of described fixed body 8.
As shown in Figure 2, described brake locate mode cutter tower 6 comprises rotor 9, fixed body 7 and brake block 8, described brake block 8 is arranged between described fixed body 7 and described rotor 9, and described fixed body 7 is fixedly connected with brake block 8, between described fixed body 7 and brake block 8, have pipeline 11, the oil-in 10 of described pipeline 11 is arranged at the upper surface of described fixed body 7.
In the first embodiment of the present invention, described fixed body 7 and described brake block 8 are that the mode by welding achieves a fixed connection, as shown in Figure 2, shown in weld 12 between fixed body 7 and brake block 8.
As a kind of distortion of the present invention, described fixed body 7 and described brake block 8 also can achieve a fixed connection by other means, such as: one-body molded or rivet connection etc., specific embodiments of the invention are not as limit.
In the first embodiment of the present invention, described pipeline 11 is oil line pipe, and hydraulic oil enters pipeline 11 by oil-in 10.By to injecting hydraulic oil in pipeline 11, make described brake block 8 realize interference fit with described rotor 9, and then described rotor is stopped operating, thereby realize brake function of the present invention.
And in brake locate mode cutter tower of the present invention; the power of brake can be by input channel 11 the pressure of hydraulic oil control; in actual use; and non-pressure is the bigger the better as long as meet needed dynamics while cutting; the excessive cooperation tension that can make described brake block 8 and described rotor 9 of pressure, the cooperation of tension is unfavorable for the protection after collision.
Preferably, in the first embodiment of the present invention, described fixed body 7 is provided with guide groove 14 with the contact surface of described pipeline 11, and the length of described guide groove 14 is identical with the length of described pipeline 11, and described guide groove 14 is for being delivered to described hydraulic oil or high pressure gas quickly the end of described pipeline 11.
Further, described guide groove 14 is thread groove, and described thread groove is to be provided with external screw thread at described fixed body 7 with the surface that described pipeline 11 contacts, thereby forms described thread groove.
As a kind of distortion of the present invention, described guide groove 14 is groove, and described groove is also arranged on the surface that described fixed body 7 contacts with described pipeline 11, thereby forms described groove.
The setting of described guide groove 14 is to be convenient to after described hydraulic oil enters pipeline 11 to arrive quickly by thread groove or groove the two ends of pipeline 11, thereby the dynamics that described brake block 8 is acted on described rotor 9 is more even, can guarantee operating efficiency and the work quality of brake locate mode cutter tower 6 of the present invention.
As shown in Figure 1, the angle of described body 5 each rotations is 0～180 °, if what install on cutterhead is 12 cutters, the cutter of placing in each cutter spacing is so separated by 30 °, if what install on cutterhead is 18 cutters, the cutter of placing in each cutter spacing is so separated by 20 °, and concrete number of cutters of installing determines according to actual needs, and described this 6 each anglec of rotation also determines with regard to following the quantity of cutter.
Below in conjunction with Fig. 1, the operation principle of brake locate mode cutter tower 6 of the present invention is described in further detail.
In course of normal operation, rotation clutch tooth 3 is dynamically, and flexible clutch tooth 4 is static, and rotation clutch tooth 3 and flexible clutch tooth 4 are in released state.The hydraulic oil producing by compression pump enters pipeline 11 by oil-in 10.Now, under the pressure-acting of hydraulic oil, brake block 8 is realized interference fit with rotor 9, thereby realizes the locking of 8 pairs of rotors 9 of brake block, and therefore, described cutter tower enters normal work clothes state.
In normal work engineering, can adjust the locking power of 8 pairs of rotors 9 of described brake block by adjusting the pressure of hydraulic oil, generally, as long as can meeting lathe, the oil pressure of hydraulic oil adding the rigidity in man-hour.
In brake locate mode cutter tower 6 of the present invention, when lathe, receive the setting formula of external force collision or servo motor 1 and the fortuitous event such as make a fault while occurring, because rotation clutch tooth 3 and flexible clutch tooth 4 are in the course of the work in released state, after high impact the in center of the locate mode of now braking cutter tower 6, can produce corresponding displacement, and the process of generation displacement can be laid down the impact that moment brings.So can there is not any destruction to other parts of the lathes such as rotation clutch tooth 3, cutter tower axle 2 and axis hole in external force, with respect to cutter tower of the prior art, cutter tower of the present invention can greatly reduce the loss that lathe practice is in the course of the work brought, thereby reduces use cost and the production efficiency of lathe.
Next according to Fig. 1, further describe the exchanging knives process of brake locate mode cutter tower 6 of the present invention.
When lathe, receive the setting formula of external force collision or servo motor 1 fortuitous event such as make a fault and occurred, thereby while causing tool damage to need tool changing.
Cancellation is injected hydraulic oil to pipeline 11, and now described cutter tower axle 2 can easily rotate.
Because servo motor has Memorability, so servo motor 1 can rotate to corresponding set angle by band moving knife tower axle 2, when.Now flexible clutch tooth 4 is fitted with rotation clutch tooth 3 under the promotion of hydraulic cylinder, and adopting rotation clutch tooth 3 and flexible clutch tooth 4 is for further improving the precision of orientation angle.Such as, if what install on cutter head structure 13 is 12 cutters, the cutter of placing in each cutter spacing so 30 degree of being separated by.
Memorability due to servo motor 1, so servo motor 1 can rotate to 30 adjacent degree places with moving knife tower axle 2 in theory, but because servo motor 1 also relates to the driving members such as belt in the process with moving knife tower axle 2, cause the precision of the final anglec of rotation of cutter tower axle 2 to decline to some extent.Such as, according to setting, cutter tower axle 2 need to rotate 20 degree could arrive corresponding set angle, but because servo motor exists drive gap between cutter tower axle 2, running accuracy is affected, so may only rotate 19.9 degree, just stop and do not turned, rotation clutch tooth 3 has also correspondingly only turned 19.9 degree.
And because the angle of flexible clutch tooth 4 is constant, it can only stretch and cannot rotate, so the angle of flexible clutch tooth 4 is still the accurate angle originally needing.
Now, the flexible clutch tooth 4 of Hydraulic Cylinder is fitted and described rotation clutch tooth 3 is corrected to due set angle with rotation clutch tooth 3.
After PLC detects the laminating signal of flexible clutch tooth 4 and rotation clutch tooth 3, the hydraulic oil that high-pressure pump is produced is by oil-in 10 input channels 11, and the hydraulic oil of input can produce interference fit by brake block 8 and rotor 9, thereby realizes locking.
After PLC detects the pressure arrival setting pressure of hydraulic oil, also need through one section, to set time delay again, just can control oil cylinder afterwards, thereby make rotation clutch tooth 3 and flexible clutch tooth 4 become released state.Now, described brake locate mode cutter tower 6 enters normal duty, and lathe is realized normal process process again.
In the whole exchanging knives process of brake locate mode cutter tower 6 of the present invention, speed simple in structure is fast.Coordinate again the clutch tooth of rear end to carry out orientation angle, can be as accurate as ± 0.000015 degree of theoretical orientation angle in exchanging knives process, operating radius, at 250mm ± 0.003mm, does not now almost affect for processing diameter, can reach equally ± 0.003 degree of machining accuracy.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
1, the present invention is owing to only having rotor, brake block and fixed body, and brake block and fixed body be fixed connection structure, without increasing seal, no matter in sealing property or cost control, has greatly and improves.
2, the present invention is braked and is replaced alone clutch tooth by use, can when lathe occurs to collide, high the receiving in Dao Ta center impact rear a large amount of displacement that produces, and lays down the impact that moment brings, thereby can protect the miscellaneous part of lathe impaired.
3, use the impaired brake locate mode cutter tower 6 of the present invention, when occurring to collide, only need again make the exchange of cutter tower once just can automatically recover precision, without maintenance, because the angle that cutter tower rotates is absolute coordinate, rotation clutch tooth and the flexible clutch tooth by servo motor, control, precision is accurate.
In other words, brake locate mode cutter tower 6 of the present invention is exactly to have replaced positioning tooth by the mode of brake with the difference of cutter tower maximum of the prior art, cutter tower parts of the prior art are many, there are rotor, brake block, seal and fixed body, and the present invention only has rotor 9 and fixed body 7, described fixed body 7 is to be fixedly connected with there is no seal with brake block 8.Thereby the inwall that passes into fixed body 7 after hydraulic oil produces small expansion and realizes brake function.
By the sharpest edges that the mode of brake replaces positioning tooth, be that the center of the locate mode cutter tower 6 that brakes when lathe occurs to collide is high can produce a large amount of displacements after receiving impact, lays down the impact that moment brings, thereby can protect the miscellaneous part of lathe impaired.
Due to the memory function that servo motor 1 possesses, at this moment only need to again the exchange of cutter tower once just can be recovered to precision automatically does not need maintenance.This can not only save time, improve the efficiency of production and can greatly reduce the loss that error brings.
Above-mentioned introduction be that the above-mentioned brake locate mode cutter tower 6 of the present invention is stopped for hub, the active area that hub is stopped is larger, so braking strength is large, is applicable to heavy cutting processing, corresponding, the volume of described brake locate mode cutter tower 6 is also larger.
Brake locate mode cutter tower 6 of the present invention for dish stop or disc brake passable too, these two kinds of structures are compact, during brake, dynamics is less, under the condition that can meet processing rigidity, also can adopt, in light cut, high speed and compound lathe, because compound lathe is exactly Structure of need compactness.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.