TOOL SPINDLE

Abstract

The disclosure relates to a tool spindle with a spindle housing, a rotary drive, a tool receiving unit, wherein the tool receiving unit is arranged within the spindle housing and is movable with respect to the housing, which tool receiving unit can be used multi-functionally, and with which both conventional machining operations such as drilling and milling as well as turning and novel machining operations, such as cam turning, can be performed without damaging the spindle and with high industrial manufacturing quality.

Claims

1. A tool spindle comprising a spindle housing, a rotary drive, and a tool receiving unit, with a driving motor acting on a rotating driving axle, and comprising the tool receiving unit arranged rotatably around the driving axle, which tool receiving unit is connected with the driving axle via a transmission chain and is arranged within the spindle housing and is movable with respect to the housing, wherein the tool receiving unit is arranged in a housing and can be moved with respect to the spindle housing about an axis located transverse to the driving axle.

2. The tool spindle according to claim 1, wherein the spindle housing is shaped cylindrically.

3. The tool spindle according to claim 1, wherein the tool receiving unit is mechanically lockable with respect to the shaft by means of a locking mechanism of a tool adjustment unit.

4. The tool spindle according to claim 1, wherein within the tool spindle, channels are formed to carry coolant.

5. The tool spindle according to claim 1, wherein at least one unit present in the transmission chain is provided with a unit for imbalance compensation.

6. The tool spindle according to claim 5, wherein the unit for imbalance compensation comprises displaceable ring segments.

7. The tool spindle according to claim 1, wherein the shaft can be locked.

8. The tool spindle according to claim 1, wherein the tool adjustment unit is located within the front and rear bearing arrangement of the driving shaft.

9. The tool spindle according to claim 1, wherein the tool adjustment unit is integrated into the shaft of the tool spindle.

10. The tool spindle according to claim 1, wherein rotary joint channels for hydraulics are provided.

11. The tool spindle according to claim 1, wherein rotary joint channels for pneumatics are provided.

12. The tool spindle according to claim 1, wherein rotary joint channels for electrical equipment are provided.

Description

DRAWINGS

[0040] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

[0041] FIG. 1 is a schematic partial sectional view of an exemplary embodiment of a tool spindle according to the disclosure;

[0042] FIG. 2 is a view of the tool receiving device according to FIG. 1;

[0043] FIG. 3 is an enlarged representation of the front area of an exemplary embodiment of a tool spindle according to the disclosure;

[0044] FIG. 4 is an overview representation of the tool spindle according to the disclosure, and

[0045] FIG. 5 is a top view onto the spindle according to FIGS. 3 and 4.

[0046] In the figures, identical elements are identified by the same reference numerals. The spindle consists of rotationally symmetric components, so that for the purpose of greater clarity, the elements are provided with reference numerals on one side of a centre line.

DETAILED DESCRIPTION

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0048] An exemplary embodiment of a tool spindle 1 according to the disclosure comprises a spindle housing 2 with a corresponding add-on unit 3. With the add-on unit 3, the tool spindle 1 may be arranged in a manner known in the art on sliding frames, slides, swivel bearings and the like, depending on the machine and the application. Alternatively, the tool spindle may also be accommodated in a receiving sleeve provided by the machine tool.

[0049] A power unit 4 with a corresponding motor is formed within the housing. Ultimately, the driving forces are applied to a shaft 5.

[0050] A tool adjustment device 6 is directly integrated into shaft 5, in which a tool adjustment unit 14 is integrated. A tool receiving unit 11 passes through a kind of lock 15. A tool interface accommodates a machining tool. The tool adjustment device 6 is directly integrated into shaft 5, so that the device can be set in rotary motion. By means of the piston assembly 12, the tool adjustment unit 14 can be adjusted about an axis located transverse to the driving axle or transverse to the tool's axis of rotation. If there is for instance a tool with a tool tip present in the tool receiving unit 11, the radius of the circular flight path of the rotating tool tip can be changed by adjustment.

[0051] A measuring sensor range 10 is arranged on the tool adjustment unit 14.

[0052] Spindle 1 arranged on corresponding sliding frames, slides and pivoting devices can be relatively shifted with respect to a stationary or a rotating tool either axially, radially, or in another way desired, depending on the application. Correspondingly, the tool can be brought up to the surface of the workpiece for the corresponding machining operation. Also a simple drill can be inserted as a tool in the tool receiving unit, as well as a milling cutter, with intermediate arrangement of adapters, drill chucks, and the like, if applicable. In this case, it makes sense to lock or jam the adjustable tool adjustment unit 14 to prevent it from shifting.

[0053] Channels provided inside the spindle serve to carry hydraulics, pneumatics, and also coolants, for which purpose corresponding connections are provided, which are not shown. Via the terminals 16 of an electrical measuring signal distributor, the measuring signals of the measuring system 10 are transmitted to a controller not shown in detail in the figures.

[0054] As can be seen in particular from FIG. 1, shaft 5 of the spindle is supported via a spindle bearing arrangement which, in the exemplary embodiment shown, comprises ball bearings 17, 18, and 19.

[0055] As can be seen from FIG. 2, the tool adjustment unit 14 pivots with respect to shaft 5 about the pivoting axis 21. The maximum pivoting range in this respect is identified by reference numeral 20.

[0056] Only in an exemplary fashion, the adjustable tool receiving unit is arranged in a housing in the exemplary embodiment shown. This housing is connected to a mounting flange 9, which can be fastened by means of fastening screws 8 to a base plate 7 on the spindle side.

[0057] FIGS. 3, 4 and 5 show a concrete embodiment of a spindle according to the disclosure. In these figures, identical elements are identified by the same reference numerals.

[0058] An exemplary embodiment of a tool spindle 31 according to the disclosure comprises a spindle housing.

[0059] A power unit 34 with a corresponding motor is formed within the housing. Ultimately, the driving forces are applied to a shaft 35.

[0060] A tool adjustment device 36 is directly integrated into the shaft 35, in which a tool adjustment unit 44 is integrated. A tool receiving unit 41 passes through a kind of lock 45. A tool interface accommodates a machining tool. The assembly 36/44 is directly integrated into shaft 35, so that the device can be set in rotary motion. By means of the piston assembly 42, the tool adjustment unit 44 can be adjusted about an axis located transverse to the driving axle or transverse to the tool's axis of rotation. If there is for instance a tool with a tool tip present in the tool receiving unit 41, the radius of the circular flight path of the rotating tool tip can be changed by adjustment.

[0061] A measuring sensor range 40 is arranged on the tool adjustment unit 44.

[0062] Spindle 31 arranged on corresponding sliding frames, slides and pivoting devices can be relatively shifted with respect to a stationary or a rotating tool either axially, radially, or in another way desired, depending on the application. Correspondingly, the tool can be brought up to the surface of the workpiece for the corresponding machining operation. Also a simple drill can be inserted as a tool in the tool receiving unit, as well as a milling cutter, with intermediate arrangement of adapters, drill chucks, and the like, if applicable. In this case, it makes sense to lock or jam the adjustable tool adjustment unit 44 to prevent it from shifting.

[0063] The rotary distributor 29 represented inside the spindle serve to carry hydraulics, pneumatics, and also coolants, for which purpose corresponding connections are provided, which are not shown. Via the terminals 46 of an electrical measuring signal distributor, the measuring signals of the measuring system 10 are transmitted to a controller not shown in detail in the figures.

[0064] As can be seen in particular from FIG. 4, shaft 35 of the spindle is supported via a spindle bearing arrangement which, in the exemplary embodiment shown, comprises ball bearings 47 and 49.

[0065] As can be seen from FIG. 3, the tool adjustment unit 44 pivots with respect to shaft 35 about the pivoting axis 52. The maximum pivoting range in this respect is identified by reference numeral 51.

[0066] Only in an exemplary fashion, the adjustable tool receiving unit is arranged in a housing 43 in the exemplary embodiment shown. In the exemplary embodiment shown, this tool receiving unit is formed integrally with shaft 35.

[0067] It can be seen from the shown exemplary embodiment that the power unit/the motor 34 comprises only one driving source.

[0068] The reference numeral 37 identifies imbalance compensation discs which are adjustable in order to compensate imbalances in this manner.

[0069] The spindle can on principle be immobilised, for which purpose the spindle clamping 38 is to be inserted. The adjustment axis may be immobilised, too, for which purpose the clamps 54 for the adjustment axis are inserted, as shown in FIG. 5. The axis of rotation of the spindle is referenced with 53.

[0070] In the exemplary embodiment shown, all data and supply lines are led through the rotary distributor 39.

[0071] The description of the exemplary embodiment only serves a better understanding and is not restrictive.

[0072] The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.