GRINDING DISC RECEPTACLE

Abstract

The grinding disc receptacle has a rotationally symmetrical, hollow-cylindrical receptacle main body. A through-pipe, which is braced in particular in relation to the receptacle main body, is disposed in the cavity of the receptacle main body so as to be spaced apart from the cylinder barrel of the hollow-cylindrical receptacle main body.

Claims

1. A grinding disc receptacle, comprising: a rotationally symmetrical, hollow-cylindrical receptacle main body having a cavity formed therein and a cylinder barrel; and a through-pipe disposed in said cavity of said receptacle main body so as to be spaced apart from said cylinder barrel of said receptacle main body.

2. The grinding disc receptacle according to claim 1, wherein said through-pipe is disposed in said receptacle main body so as to be coaxial with said receptacle main body.

3. The grinding disc receptacle according to claim 1, further comprising a thread disposed on one end of said through-pipe on said through-pipe.

4. The grinding disc receptacle according to claim 1, further comprising a through-pipe holder disposed on said receptacle main body.

5. The grinding disc receptacle according to claim 4, further comprising: a coolant supply pipe connected to said through-pipe holder; and/or a sleeve disposed between said through-pipe and said through-pipe holder.

6. The grinding disc receptacle according to claim 1, further comprising: a grinding disc bearing; and a clamping shoulder for bracing with said receptacle main body or with said grinding disc bearing connected to said receptacle main body and disposed on another end of said through-pipe.

7. The grinding disc receptacle according to claim 1, further comprising a grinding disc bearing bracing said through-pipe and which is supported on said receptacle main body.

8. The grinding disc receptacle according to claim 1, further comprising a grinding disc bearing having at least one filler bore formed therein and said at least one filler bore opening into said cavity.

9. The grinding disc receptacle according to claim 6, wherein said clamping shoulder has an external cone.

10. The grinding disc receptacle according to claim 7, further comprising a clamping flange screwed to said grinding disc bearing, for a grinding disc.

11. The grinding disc receptacle according to claim 10, wherein said clamping flange has radial coolant through-bores formed therein and/or a coolant bore formed therein which extends axially through said clamping flange.

12. The grinding disc receptacle according to claim 10, further comprising a sleeve disposed on an interface between said through-pipe and said clamping flange.

13. The grinding disc receptacle according to claim 7, wherein at least one of said receptacle main body or said grinding disc bearing has an external circumferential face with bores formed therein for balancing screws.

14. The grinding disc receptacle according to claim 1, wherein said through-pipe is a coolant pipe.

15. The grinding disc receptacle according to claim 1, further comprising at least one damping body disposed in said cavity.

16. The grinding disc receptacle according to claim 15, wherein said at least one damping body is an annular disc or a sleeve.

17. The grinding disc receptacle according to claim 15, wherein said at least one damping body is a damping body which is held so as to be spaced apart from said cylinder barrel and/or from said through-pipe.

18. The grinding disc receptacle according to claim 1, further comprising a plurality of damping bodies disposed in said cavity.

19. The grinding disc receptacle according to claim 18, further comprising sleeves, said plurality of damping bodies are annular discs which are held so as to be axially spaced apart by means of said sleeves.

20. The grinding disc receptacle according to claim 1, further comprising a damping material is incorporated in said cavity.

21. The grinding disc receptacle according to claim 1, further comprising an interface for a working spindle disposed on one end of said receptacle main body so as to be integrally connected to said receptacle main body or so as to be connected as a separate component.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0065] FIG. 1 is a diagrammatic, sectional view of a grinding disc receptacle according to an embodiment according to the invention;

[0066] FIG. 1A is a sectional view of a fragment of the grinding disc receptacle according to the embodiment according to the invention as per FIG. 1, having the screw fitting of the grinding disc bearing to the receptacle main body;

[0067] FIG. 2 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention;

[0068] FIG. 3 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention;

[0069] FIG. 4 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention;

[0070] FIG. 5 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention;

[0071] FIG. 6 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention;

[0072] FIG. 7 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention; and

[0073] FIG. 8 is a sectional view of the grinding disc receptacle according to an embodiment according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0074] Referring now to the figures of the drawings in detail and first, particularly to FIGS. 1 and 1A thereof, there is shown a modular, or multiple-part, respectively, grinding disc receptacle 2.

[0075] The grinding disc receptacle 2 has a substantially rotationally symmetrical, hollow-cylindrical receptacle main body 4 (having a cylinder barrel 8).

[0076] A grinding disc bearing 36 is disposed on one end of this receptacle main body 4, so as to be screwed to the receptacle body 4 by means of screws 138 (cf. FIG. 1; FIG. 1A shows a cover-proximal fragment of the grinding disc receptacle 2 in a different (longitudinal) section which shows the screw fitting 136 of the grinding disc bearing 36 and the receptacle main body 4). As is shown in FIG. 1, a grinding disc 48 is (held) braced between the grinding disc bearing 36 and a clamping flange 46 so as to bear on or against the grinding disc bearing 36.

[0077] A cover 90 is screwed (92) to the clamping flange 46, the cover 90 covering a coolant bore 54 which in the center extends axially 14 through the clamping flange 46.

[0078] As is also shown in FIG. 1, the clamping flange 46 provides radially 16 running coolant bores 50 which extend from the central axial 14 coolant bore 54 radially 16 outwards to the external side 114 of the clamping flange 46.

[0079] The coolant bore 54, which in the center extends axially 14 through the clamping flange 46, on the cover side is closed by means of a closure screw 52.

[0080] The bracing of the grinding disc 48, between the clamping flange 46 and the grinding disc bearing 36, takes place by way of a screw fitting of the clamping flange 46 and the grinding disc bearing 36 by means of long screws 94, the latter extending through through-bores 96 in the clamping flange 46 into threads 98 (screwed there) in bores 40, so-called filler bores 40 (see hereunder for the purpose of the latter), in the grinding disc bearing 36.

[0081] A damping material such as, for example, an elastomer or an (aluminum) foam 80, (indicated as optional) can be filled into the cavity 6 of the (hollow-cylindrical) receptacle main body by way of these filler bores 40, which are able to be closed by means of closure screws 38, as is also shown in FIG. 1.

[0082] As is also shown in FIG. 1, different bores 60, in particular threaded bores, for balancing screws (62, not shown), are incorporated on the external circumferential face 64 of the receptacle main body 4 and the grinding disc bearing 36.

[0083] A through-pipe 10, here a coolant pipe 10, is disposed in the hollow-cylindrical receptacle main body 4, so as to be coaxial with the receptacle main body 4 (in terms of the central axis/symmetry axis/rotation axis 12), the through-pipe 10 proximal to the cover being held (braced—see hereunder for details) in a through-bore 100 in the grinding disc bearing 36, so as to be sealed (in relation to the grinding disc bearing) by an annular seal 66.

[0084] As is shown in FIG. 1, the coolant pipe 10 on the cover-proximal end thereof provides a conical clamping shoulder 34 (forming an external cone 42) which has a predefinable cone angle 44, for example of approximately 50°, and is braced in relation to a complementary clamping shoulder 88 in the through-bore 100 of the grinding disc bearing 36.

[0085] This bracing of the coolant pipe 10 and the grinding disc bearing 36 also has the effect that the grinding disc bearing 36, which is screwed (138) to the receptacle main body 4, by way of a flange 102 bears against or on the cover-proximal end side 104 of the receptacle main body 4 so as to be braced, or is drawn against the latter on the cover-proximal end side 104 of the receptacle main body 4, and the coolant pipe 10 is thus ultimately braced in relation to the receptacle main body 4, this imparting a high degree of stiffness to the system.

[0086] An annular seal 140 seals the contact area between the grinding disc receptacle 36 and the receptacle main body 4.

[0087] The (application of the) clamping force for the bracing (of the coolant pipe 10 and the grinding disc bearing 36, or the coolant pipe 10 and the receptacle main body 4, respectively) takes place by means of a screw fitting 20 on the other end of the coolant pipe 10.

[0088] For this purpose, the coolant pipe 10 there (on the other end) provides an external thread 18 that engages in an internal thread 86 of a through-pipe holder 22 which is connected in a rotationally fixed manner to the receptacle main body 4 (see hereunder for details), and by way of which the coolant pipe 10 is able to be screwed (screw fitting 20) into the through-pipe holder 22, more specifically into a through-bore 116 through the through-pipe holder 22 (thereon proximal to the cover). The axial screw travel determines (in a stepless manner) the pretension.

[0089] A seal 66 (in the form of an annular seal 66) between the coolant pipe 10 and the through-pipe holder 22 is also provided in the region of the screw fitting between the coolant pipe 10 and the through-pipe holder 22.

[0090] As is shown in FIG. 1, in the coolant pipe 10, proximal to the cover at the interface 56 between the coolant pipe 10 and the clamping flange 22 that lies in the interior of the grinding disc bearing 36, a sleeve 58 is furthermore inserted in the coolant pipe 10, (the sleeve 58 also being sealed (66) in relation to the coolant pipe 10), the other end of said sleeve 58 being received in the axial coolant bore 54 of the clamping flange 46 (also sealed here 66).

[0091] As is shown in FIG. 1, in the coolant pipe 10, at the end facing away from the cover-proximal end, a sleeve 30 is furthermore inserted into the coolant pipe 10 up to a detent 110, (the sleeve 30 also being sealed (32) in relation to the coolant pipe 10), the other end of said sleeve 30 being inserted in the through-bore 116 through the through-pipe holder 22, here however being axially free so as to guarantee a maximum axial screw travel. A seal 32, between the sleeve 30 and the through-pipe holder 22, is also provided here.

[0092] As is also shown in FIG. 1, the through-pipe holder 22 by way of a shoulder 106 disposed thereon is supported on a (counter) shoulder 108 in the interior of the receptacle main body 4. Pins 24 prevent twisting of the through-pipe holder 22.

[0093] FIG. 1 furthermore shows that a coolant supply pipe 26—on the end of the through-pipe holder 22 that faces away from the cover-proximal end—is connected (in a sealed manner 32) to the through-pipe holder, so as to be screwed by way of a sleeve 112.

[0094] An interface 82, here an HSC 82, is (integrally) disposed on the other end, the grinding disc-proximal end, of the receptacle main body 4 on the receptacle main body 4, the interface 82 establishing the connection between the grinding disc receptacle 4 and a working spindle/grinding spindle (84, not shown) of a machine tool (cf. FIG. 8, it is highlighted here that the interface 82, which is integral to the receptacle main body 4, can also be embodied by a separate component 82, the latter optionally being connected in a rotationally fixed manner by means of pins 136 to the receptacle main body 4).

[0095] Coolant can be delivered up to the grinding disc 48 by way of the coolant supply pipe 26, the through-bore 116 in the through-pipe holder 22, the sleeve 30 that thereon faces away from the cover-proximal side, the coolant pipe 10, the cover-proximal sleeve 58 and the clamping flange 46 that contains the axial through-bore/coolant bore 54 and the radial coolant bores 50. Pores (not evident) in the grinding disc 48 can allow the coolant to enter the grinding disc 48. Seals (32, 66) described in the grinding disc receptacle 4, or on components thereon, respectively, prevent any ingress of the coolant into the cavity 6.

[0096] Alternatively or additionally thereto, the coolant from outside the grinding disc 48 can also be guided through radial bores in the grinding disc bearing 36 and/or the clamping flange 46 (not illustrated).

[0097] Modified and/or refined embodiments of the grinding disc receptacle 2 shown in FIG. 1 and described above are illustrated in FIGS. 2 to 8.

[0098] Since these embodiments of grinding disc receptacles 2 (as per FIGS. 2 to 8) correspond substantially to the (described) grinding disc receptacle 2 as per FIG. 1, repetitions of descriptions of identical, functionally equivalent components in the case of the further grinding disc receptacles 2 in FIGS. 2 to 8 will be dispensed with in the following descriptions. Only the modifications and refinements (in FIGS. 2 to 8) will be visualized hereunder.

[0099] FIG. 2 shows the grinding disc receptacle 2 as to how the latter is in terms of the damping behavior thereof is improved by additional damping elements 68.

[0100] As is shown in FIG. 2, a multiplicity of damping elements 68—in the form of annular discs 70—(disposed on one another in the manner of a stack) are situated in the interior of the cylinder barrel 8 of the receptacle main body 4.

[0101] These annular discs 70, by way of the external circumference 120 thereof in the cylinder barrel 8 of the receptacle main body 4, are press-fitted coaxially with the receptacle main body 4 and the through-pipe/coolant pipe 10, and (in the cavity 6 in the receptacle main body 4) extend substantially across the entire axial 14 length between the through-pipe holder 22 and the grinding disc bearing 36.

[0102] The internal circumference diameter 122 of the annular discs 70 corresponds substantially to an external circumference diameter 126 of the through-pipe holder 22—and (where the annular discs 70 do not sit on the through-pipe holder 22, cf. FIG. 2) allows a radial spacing 72 from the external circumference 124 of the coolant pipe 10.

[0103] FIG. 3 shows the grinding disc receptacle 2 as to how the latter in terms of the damping behavior thereof is improved by another additional damping element 68.

[0104] As is shown in FIG. 3, a damping element 68—in the form of a sleeve 70—is situated in the interior of the cylinder barrel 8 of the receptacle main body 4.

[0105] This sleeve 70, by way of the external circumference 120 thereof in the cylinder barrel 8 of the receptacle main body 4, is press-fitted coaxially with the receptacle main body 4 and the through-pipe/coolant pipe 10, and (in the cavity 6 in the receptacle main body 4) extends substantially across the entire axial 14 length between the through-pipe holder 22 and the grinding disc bearing 36. The sleeve 70 can also be axially braced in the cavity 6 of the receptacle main body 4 by means of the grinding disc bearing 36.

[0106] The wall thickness 128 of the sleeve 70 is configured so as to be thin-walled such that a radial spacing 72 from the external circumference 124 of the coolant pipe 10 is configured.

[0107] FIG. 4 shows the grinding disc receptacle 2 as to how the latter in terms of the damping behavior thereof is improved by again other additional damping elements 68.

[0108] As is shown in FIG. 4, two damping elements 68—in the form of annular discs 70—are situated in the interior of the cylinder barrel 8 of the receptacle main body 4.

[0109] These annular discs 70, by way of (rubber) rings 74 disposed on the external circumference 120 of said annular discs 70 at a radial spacing 72, are held in the cylinder barrel 8 of the receptacle main body 4—coaxially with the receptacle main body 4 and through-pipe/coolant pipe 10, specifically held (axially 14) on the grinding disc bearing-proximal end of the receptacle main body 4, so as to have a mutual axial spacing 78.

[0110] If the internal circumference diameter 122 of the annular discs 70 is larger than the external circumference diameter 126 of the through-pipe 10, the annular discs 70 thus also allow a radial spacing 72 from the external circumference 124 of the coolant pipe 10.

[0111] FIG. 5 shows the grinding disc receptacle 2 as to how—in this case—the latter in terms of the damping behavior thereof is improved by an additional damping element 68.

[0112] As is shown in FIG. 5, a damping element 68—in the form of a sleeve-shaped body 70, again referred to only also as the sleeve 70 for short—is situated in the interior of the cylinder barrel 8 of the receptacle main body 4.

[0113] This sleeve 70, by way of (rubber) rings 74 that are disposed on two axially spaced apart locations on the external circumference 120 of said sleeve 70 at a radial spacing 72, is held in the cylinder barrel 8 of the receptacle main body 4—coaxially with the receptacle main body 4 and the through-pipe/coolant pipe 10.

[0114] The internal circumference diameter 122 of the sleeve 70 is slightly larger than the external circumference diameter 126 of the through-pipe 10, as a result of which the sleeve 70 can be pushed onto the coolant pipe 10.

[0115] The sleeve 70 extends axially on the entire axial length between the through-pipe holder 22 and the grinding disc bearing 36, but may at both ends have in each case a clearance in relation to the through-pipe holder 22 and the grinding disc bearing 36.

[0116] FIG. 6 shows the grinding disc receptacle 2 as to how the latter in terms of the damping behavior thereof is improved by—in this case two—additional damping elements 68.

[0117] As is shown in FIG. 6, in this case, two damping elements 68—in the form of annular discs 70—are situated in the interior of the cylinder barrel 8 of the receptacle main body 4.

[0118] These annular discs 70, by way of (rubber) rings 74 disposed on the internal circumference 130 of the annular discs 70 at a radial spacing 72, are held on the coolant pipe 10—coaxially with the receptacle main body 4 and the through-pipe/coolant pipe 10.

[0119] If the external circumference diameter 132 of the annular discs 70 is smaller than the internal circumference diameter 134 of the receptacle main body 4, or of the cylinder barrel 8 of the latter, respectively, the annular discs 70 thus also allow a radial spacing 72 from the receptacle main body 4.

[0120] The two annular discs 70 are held axially in position (by way of an axial spacing 78) by means of sleeves 76 which are disposed between and adjacent to said annular discs 70 and are pushed onto the coolant pipe, or disposed thereon, respectively, between the through-pipe holder 22 and the grinding disc bearing 36.

[0121] FIG. 7 shows the grinding disc receptacle 2—having a modified clamping contact or clamping faces, respectively, between, in this case, the coolant pipe 10 and the receptacle main body 4 (immediate direct bracing of the through-pipe 10 with the receptacle main body 4).

[0122] This means that the force flux of the bracing mechanism of the coolant pipe 10 into the receptacle main body 4 does not take place by way of the grinding disc bearing 36, but immediately and directly from the coolant pipe 10 to the receptacle main body 4.

[0123] As is shown in FIG. 7, the coolant pipe 10 to this end, on the cover-proximal end thereof, provides a conical clamping shoulder 34 (which forms a flat external cone 42) having a predefinable cone angle 44, here for example approximately 15°, the clamping shoulder 34 being braced in relation to a complementary clamping shoulder 88, in this case, on the receptacle main body 4.

[0124] The sleeve 58—between the coolant pipe 10, on the one hand, and the clamping flange 22, on the other hand—is thus guided through the bore 100 in the grinding disc bearing 36 and sealed there by means of a first seal 66, the bore 100 in this case being cylindrical and free of any shoulder/cone. The sleeve 58 is also sealed in relation to the coolant pipe 10 by means of a second seal 66.

[0125] FIG. 8 highlights that the interface 82, which as has been described above is configured integrally with the receptacle main body 4, can also be embodied by a separate component 82.

[0126] As is shown in FIG. 8, the separate interface 82 here is connected—in a rotationally fixed manner—to the receptacle main body 4 by pins 136.

[0127] If the interface 82 is thus provided as a separate component, it would also be possible (not shown) to provide the through-pipe holder 22 integrally on the interface (instead of a separate component), the embodiment of the interface 82 and the receptacle main body 4, which is separable as a result of the separate interface 82, guarantees adequate accessibility, the latter being required for the production and assembly of the grinding disc receptacle 2.

[0128] Although the invention has been illustrated and described in more detail using the preferred exemplary embodiments, the invention is not restricted by the disclosed examples and other variations can be derived therefrom without departing from the scope of protection of the invention.

[0129] The following is a summary list of reference numerals and the corresponding structure used in the above description of the invention: [0130] 2 Grinding disc receptacle [0131] 4 Receptacle main body [0132] 6 Cavity [0133] 8 Cylinder barrel [0134] 10 Through-pipe, coolant pipe [0135] 12 Central axis/symmetry axis/rotation axis [0136] 14 Axial, axial direction [0137] 16 Radial, radial direction [0138] 18 (External) thread [0139] 20 Screw fitting [0140] 22 Through-pipe holder [0141] 24 Pin, pin-fitted [0142] 26 Coolant supply pipe [0143] 28 Screwed, screw fitting [0144] 30 Sleeve [0145] 32 Seal [0146] 34 Clamping shoulder [0147] 36 Grinding disc bearing [0148] 38 Closure screw [0149] 40 Filler bore [0150] 42 (External) cone [0151] 44 Cone angle [0152] 46 Clamping flange [0153] 48 Grinding disc [0154] 50 Radial coolant bore [0155] 52 Closure screw [0156] 54 (Axially extending) coolant bore [0157] 56 Interface (through-pipe/clamping flange) [0158] 58 Sleeve [0159] 60 Bore (for balancing screw) [0160] 62 Balancing screw (not shown) [0161] 64 External circumferential face [0162] 66 Sealed, insulation (coolant pipe), annular seal [0163] 68 Damping body, damping/oscillatory mass [0164] 70 Annular disc, sleeve [0165] 72 (Radial) spacing, (radially) spaced apart [0166] 74 Ring [0167] 76 Sleeve [0168] 78 (Axial) spacing, (axially) spaced apart [0169] 80 Damping material, elastomer, (aluminium) foam [0170] 82 Interface, HSC, steep cone [0171] 84 Grinding spindle (not shown) [0172] 86 Internal thread (for 18/20) [0173] 88 (Complementary) clamping shoulder [0174] 90 Cover [0175] 92 Screw fitting (for cover) [0176] 94 Long screw [0177] 96 (Through-)bore [0178] 98 Thread [0179] 100 Through-bore (in the grinding disc bearing) [0180] 102 Flange [0181] 104 Cover-proximal end side of the receptacle main body [0182] 106 Shoulder (on the through-pipe holder) [0183] 108 (Counter) shoulder (for 106) [0184] 110 Detent [0185] 112 Sleeve [0186] 114 External side [0187] 116 Through-bore [0188] 120 External circumference [0189] 122 Internal circumference diameter (of 70) [0190] 124 External circumference [0191] 126 External circumference diameter (of 22 or 10) [0192] 128 Wall thickness [0193] 130 Internal circumference [0194] 132 External circumference diameter (of 70) [0195] 134 Internal circumference diameter (of 4/8) [0196] 136 Pin [0197] 138 Screw [0198] 140 Annular seal