Back to results
US 2015/0239054 A1Published application
Tool holder and attachment head having said tool holder
AssigneeWFL Millturn Technologies GmbH & Co. KG
InventorHerbert Maringer
Life of this patent
Estimating the term…
Abstract
There is shown a tool holder for a hob, which is embodied as a bore having a clamping device provided between a spindle and a counterholder, the clamping device having a centring clamping piece that is engageable in the hob and a receiving mandrel that is engageable in the hob, the receiving mandrel being braced with the centring clamping piece in order to mount the hob, wherein the centring clamping piece has a flange. In order to ensure the best concentric running properties in a stable manner, it is proposed that the centring clamping piece and the receiving mandrel each have a flange, which each mount a radial adjusting drive with at least one adjusting member that is adjustable with respect to the spindle and/or the counterholder in order to centre the clamping device.
Claims15
1:
- Tool holder for a hob (3) in a bore design, having a clamping device (4, 104) provided between a spindle (29) and a counter-holder (30), which device has a centering clamping piece (5, 105) that can engage into the hob (3) and an arbor (6, 106) that can engage into the hob (3), which arbor is braced together with the centering clamping piece (5, 105) in order to mount the hob (3), wherein the centering clamping piece (5, 105) has a flange (34, 35), wherein centering clamping piece (5, 105) and arbor (6, 106) each have a flange (34, 35) that each support a radial setting drive (36, 37) having at least one setting element (38, 39) that can be adjusted against the spindle (29) or the counter-holder (30), for centering the clamping device (4, 104).
2:
- Tool holder according to claim 1, wherein the spindle (29) and/or the counter-holder (30) is/are fitted into the respective flange (34, 35) of centering clamping piece (5, 105) or arbor (6, 106), and the setting element (38, 39) can be radially adjusted against the spindle (29) or the counter-holder (30).
3:
- Tool holder according to claim 2, wherein the radial setting drive (36, 37) has multiple setting elements (38, 39) that lie diametrically opposite one another, particularly stud screws.
4:
- Tool holder according to claim 1, wherein centering clamping piece (5, 105) and arbor (6, 106) are each configured in one piece.
5:
- Tool holder according to claim 1, wherein the clamping device (4) has a clamping anchor (7) that axially connects centering clamping piece (5) and arbor (6) and braces them relative to one another.
6:
- Tool holder according to claim 5, wherein the clamping device (4) has at least one clamping element (9, 10) operatively connected with the clamping anchor (7), which element is provided between clamping anchor (7) and centering clamping piece (5) or arbor (6), and interacts with these to produce radial mounting of the hob (3).
7:
- Tool holder according to claim 6, wherein centering clamping piece (5) and/or arbor (6) has/have an inner cone (15, 16) against which an outer cone (11, 12) of the respective clamping element (9, 10) rests.
8:
- Tool holder according to claim 6, wherein a clamping element (9, 10) is provided, in each instance, for centering clamping piece (5) and arbor (6).
9:
- Tool holder according to claim 6, wherein the clamping anchor (7) passes through the hollow centering clamping piece (5) and the hollow arbor (6).
10:
- Tool holder according to claim 6, wherein the clamping anchor (7) engages into an inside thread (18) of the respective clamping element (10) with its outside thread (17).
11:
- Tool holder according to claim 6, wherein at least one clamping element (9, 10) has a radial clamping collar (19, 20), which lies against a crosspiece (21, 22) of the centering clamping piece (5) or of the arbor (6).
12:
- Tool holder according to claim 11, wherein the radial clamping collar (19, 20) supports an axial setting drive (25, 26) having at least one setting element (27, 28) that is axially adjustable against the crosspiece (21, 22).
13:
- Tool holder according to claim 12, wherein the axial setting drive (25, 26) has multiple diametrically opposite setting elements (27, 28), particularly stud screws.
14:
- Tool holder according to claim 11, wherein the crosspiece (21, 22) of the centering clamping piece (5) or of the arbor (6) forms a radial collar (23, 24) for the hob (3).
15:
- Attachment head having a spindle (39), having a counter-holder (30), and having a tool holder (2, 102) according to claim 1, and having radial bearings (32) that are provided between support (33) and spindle (29) and between support (33) and counter-holder (30).