DE2028563A1 - Ring flange for attaching a cylindrical grinding wheel on which you carry the spindle - Google Patents

Description

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Viii- Gase 26öf ^iiScrs -'- 2 ^ iV ^ vojsi ^ chen-Billach, June 9th, 1970

CINCINNATI MILACBDN INC », 4701 Marburg Avenue, Cincinnati, Ohio 45209 »United States

Ring flange for attaching a cylindrical Grinding wheel on the spindle that carries it

The invention relates to an annular flange for attaching a cylindrical grinding wheel on the spindle carrying it »

As is known, the so-called "free" end of the cylindrical Grinding wheel carried by means of an annular flange pushed onto its spindle, the inner diameter of which by a certain amount Dimension must be greater than the spindle diameter or »than the Diameter of the spindle part that receives the splash, so that the flange can be correctly adjusted in its radial position to the grinding wheel without stressing it »at especially large grinding wheels, such as those used for centerless Grinding machines are used, however, the margin causes between the postponed splash and the spindle imbalances in the grinding wheel, which is transferred to the workpieces as platter movements »

The object of the invention is to eliminate these disadvantages, and this is done according to the invention in that the on the Spindle sliding ring flange with a contact surface grasping the end of the grinding wheel and several on its inner circumference arranged at a distance from one another, to Spindle is provided with open recesses, each of which has an inclined surface opposite the spindle and as Element to avoid relative movements between the face and the spindle one between the inclined surface and the spindle clamped by means of a compression spring and in operating condition

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the grinding wheel remaining in firm contact with the spindle Contains wedge body.

The invention ensures a free postponement and Remove the one that supports one end of the grinding wheel Ring flange after the centering of the pushed-on flange and its Contact of the Jl ans cn es with the spindle through which Relative movements between the spindle on the one hand and the flange and the grinding wheel on the other hand are avoided ^ that after the centered connection of the flange with the grinding wheel the previously in their recesses on the inner circumference the wedge body retained by the Slansches by releasing them from their anchoring under the action of each of them associated compression spring are extended almost radially to the spindle and brought into contact with it ^ so that as a result the flange is supported on the spindle "

The mechanism for releasing and retaining the wedge body from the spindle preferably consists of two of the inner rim of the Slansches encompassing both sides and pivotable relative to this νβ3> Rings, which are connected to one another by means of bolts, each bolt through one of the recesses passed on the inner circumference of the flange and as a stop to be actuated by pivoting the rings for pushing back of the wedge body located in the relevant recess is formed against the pressure of the associated spring "

To swivel the rings in one direction or the other is preferably one of these formed on part of its circumference as a ring gear and one through a side opening the toothed socket pin wrench to be brought into engagement with the ring gear is provided «,

Further advantageous details and advantages of the invention emerge from the following description of a preferred one Embodiment based on the drawing «In this show:

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Fig _# 1 is a front view of the spindle of a grinding machine with the Sdileif disk attached to the spindle in a vertical partial section}

Fig. 2 is a partially sectioned end view of the on the spindle Influences attached and connected to the grinding wheel before s j

3 shows a partial step along the line 3-3 in FIG. 2j

Mg, 4 the perspective view of one of the inventions used according to Springs and

5 shows the perspective view of one of the wedge bodies used according to the invention

Fig * 1 shows the indicated outlines of a grinding machine 10, on the rotatably mounted spindle 11, the cylindrical Grinding wheel 12 is attached · The latter sits on the main part 13 of the spindle 11 and is on its right side by a Flange 15 is supported, which, as a one-piece component of the grinding wheel 12 with the spindle, offers a firm hold Compensation of uneven pressure forces is between the Grinding wheel 12 and the flange 15 a buffer ring 14 inserted

The opposite (left) end of the grinding wheel 12 is supported by a second flange 16, which is received by the spindle part 21 of smaller diameter and can be removed from or pushed onto it _{e is} between the contact surface 18 of the flange 16 and the grinding wheel 12 Here, too, a buffer ring 17 is used, which prevents stresses occurring in the case of any small misalignment between the flange and the grinding wheel.

The flange 16 is in the axial direction by six clamping screws 19 connected to the spindle 11 and has one inward offset shoulder 23 of smaller diameter, which can be pushed into the bore of the grinding wheel 12 »

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Because of the sliding fit of the flange 16 on the. -verjüngten spindle part 21 must be kept a small clearance between the two _t of the "in. the Tbisher known arrangements of this type vibration or Jl att heritage we gongen of the rotating grinding wheel caused, ₀ of that of a Hachteil especially with larger cylindrical. grinding wheels in the manner of overall "measure Figure 1 _d would occur in appearance

This disadvantage can only be remedied by creating a firm connection between the flange 16 and the spindle 11 which is effective during the rotation of the spindle radial sighting can be freely aligned to the grinding wheel 12 ₉ otherwise internal stresses will arise in the grinding wheel.

The plan 16 formed according to the invention is illustrated in detail in "2 Ms 5". It has an annular body 24 with several (here six according to Lie © 2) around its inner cross-section / evenly distributed recesses 25 which are open towards the spindle and each of which is provided with an inclined surface 26 opposite the spindle in addition, an inner edge that surrounds and narrows its opening 28 and includes a leaf spring 29 and a wedge body. per 30 with wedge surfaces 32 and 33 · The spring / is supported on a Side surface 34- of the recess 29 and exerts a pressure on the basement body 30 so it forms a resilient tensioning element, through which the wedge body 30 in the tapering space between the inclined surface 26 and the spindle 11 back » is pushed in. On grand the even. All around arrangement of the recesses 25 and of those located in them Wedge bodies 30 exerted on the spindle and the flange Clamping forces, the latter is clamped radially »

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The Innenab section of the flange ring body 24 has a Hing 36 and 37 on each of its two sides. These two hangers 36 and 37 are connected to one another by several bolts 38. Each of these bolts 38 penetrates one of the recesses 25 · The outer ring 36 is designed as a toothed ring 40 in the area of two opposing bores 42 · If the rings 36 »37 are rotated counterclockwise according to Hg · 2, the bolts 38 press the wedge bodies 30 against the associated .Federn 29 and bring the wedge body 30 out of engagement from the spindle 11, so that the flange 16 can now easily be removed from this »For rotating pivoting of the rings 36,37 is a toothed socket pin wrench 41, which is in a the bores 42 introduced, thereby with its teeth 43 in engagement with the ring gear portion 40 of the ring 36 is brought, whereupon the rings 36,37 are pivoted by turning the socket wrench 41. _{The clamping screws 45 and 46 O} attached to the flange are used to fix the pivoted rings 36, 37

The wedge bodies 30 have two lateral projections 43 and 49 o Are the rings 36,37 in such a way (i.e. in a counterclockwise direction according to Fig. 2) rotated that the bolts 38 against the wedge body 30 press, this and the springs 29 are in their position to each other by the interaction of the bolts 38 with the projections 48 and the springs 29 with the inner edges 28 of the recesses 25 and held together with the projections 49 of the wedge body 30

When the grinding wheel 12 is placed on the spindle 11, the rings 36,37 are in their aforementioned pivot position, in which they have been set by the clamping screws 45, 46. The flange 16 with its rings 36,37 fixed in this way is now on the tapered part 21 of the Spindle 11 pushed and with its shoulder 23 in the Grinding wheel 12 used, then connected by tightening the fastening screws 19 with this and axially fixed. Up to this point there is no radial contact »wipe

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the Plansch 16 and the spindle 11 © Now the tensioning screws 45 and 46 released and the rings 36 »37 clockwise rotated, until the bolts 38 disengage from the wedge body = » pern 30 come, so that the wedge body 30 under the pressure the JFedern 29 get into their clamping position and the Jl ansGh anchoring radially ^ Jails ^ u of a later period because of the on the buffer rings 14,17 pressure to be exerted the fastening « screws 19 must be tightened again, so this can be done without the Hansen from its radial anchorage needed to be resolved

The invention is not limited to the embodiment described above Rather, within the scope of the invention, expedient modifications and configurations thereof can be restricted to be made "

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Claims (10)

PATEHY APPROACH 1. Ring flange for attaching a cylindrical grinding wheel on the spindle carrying it, characterized in that that the on-the-spindle (11) slid on ge. pushed annular flange (24) with a contact surface (18) which grips the relevant end of the grinding wheel (12) and several on the The inner circumference (20) is provided with recesses (25) which are arranged at a distance from one another and are open towards the spindle (11), each of which one of the spindle (H) opposite inclined surface (26) and as an element to avoid relative movements between Flange (24) and spindle (11) one between the inclined surface (26) and the spindle (11) by means of a compression spring (29) clamped and remaining in firm contact with the spindle (11) during the operating state of the grinding wheel (12) Wedge body (30) contained 2 · Device according to claim 1, characterized in that each recess (25) has a narrowing surrounding its opening, After removing the flange (24) from the spindle (11), secure the spring (29) and the wedge body (30) against falling out Has inner edge (28). 3. Device according to claims 1 and 2, characterized in that the spring (29) is designed as a leaf spring. 4 «device according to claims 1 to 3 * by an arrangement for loosening the wedge bodies (30) clamped with the spindle (11) 5. Apparatus according to claim 4, characterized in that the Arrangement for releasing the wedge body (30) from two surrounding the inner ring of the flange (24) on both sides and relative to this rotatable rings (36 * 37), which by means of bolts (38) are connected to one another, each bolt (38) through one of the recesses (25) on the inner circumference of the flange 1-0 9-8 17/1 1: \ ^r 3 ~ (24) passed through and designed as a _{stop to be actuated by rotating pivoting of the rings (36 S} 37) for pushing back the wedge body (30) located in the relevant recess (25) against the pressure of the associated spring (29) _c 6 »A device according to claims 1 to 5® characterized marked in" characterized in that for rotating the pivoting of the rings (36,37) at least a portion of one of them (36 or ₀ 37) formed as a ring gear (40) and through a side opening (42 ) of the flange (24) with the ring gear (40) in engagement-bringing serrated socket pin key (41) is provided zn © 7 · Device according to the claims. 1 to 6 ₉ characterized by locking elements (45 ₉ 46) for fixing the rings (36 _$ 37) in their set pivot position © 10 9 8 17/1135 Blank page