ROTARY BLADE ASSEMBLY THAT CAN BE USED IN TILE-CUTTING MACHINES

Abstract

The invention relates to a rotary blade assembly that can be used in tile-cutting machines, which has an annular blade (1) mounted on a bearing (2) comprising an inner race (21), and outer race (22) and ball bearings (23). A first side of the outer race (22) comprises a perimeter projection (24) that forms a stop for mounting the blade (1) on the bearing. A securing ring (3) that forms a second stop for mounting the blade (1) is mounted and secured on the second side of the outer race (22), the bearing and/or the securing ring comprising projections or recesses (31, 25, 26) which are coupled to complementary recesses or projections (11, 12) defined in the blade and which prevent the relative rotation of the blade (1) with respect to the securing ring (3) and the outer race (22) of the bearing (2).

Claims

1. A rotary blade assembly for use in tile-cutting machines, having an annular blade (1) mounted on a bearing (2) comprising an inner race (21), and outer race (22) and ball bearings (23) arranged between both races, a first side of the outer race (22) comprising a perimeter projection (24) that forms a first side stop for mounting the annular blade (1) on the bearing, the rotary blade assembly comprising: a securing ring (3) of the annular blade (1) mounted on a second side of the outer race (22) of the bearing, secured to said outer race (22) and that forms a second stop for mounting the annular blade (1); wherein the bearing and/or the securing ring comprise on a contact surface with the annular blade projections or recesses (31, 25, 26) which, in a mounting position of the assembly, are coupled to complementary recesses or projections (11, 12) defined in a corresponding contact surface of the annular blade, and prevent relative rotation of the annular blade (1) with respect to the securing ring (3) and the outer race (22) of the bearing (2).

2. The rotary blade assembly, according to claim 1, wherein the securing ring (3) and the outer race (22) of the bearing (2) are secured to each other by means of welding, micro-welding or interference (5).

3. The rotary blade assembly, according to claim 1, wherein the perimeter projection (24) of the outer race (22) of the bearing and the securing ring have thicknesses suitable for a centered arrangement of the annular blade with respect to the bearing.

4. The rotary blade assembly, according to claim 1, wherein the coupling projections (31) and the recesses (11) are defined on opposing side faces of the securing ring (3) and of the annular blade (1).

5. The rotary blade assembly, according to claim 1, wherein the projections (25) configured to be housed in the recesses (11) of the annular blade (1) are defined on the side of the outer race (22) of the bearing corresponding to the perimeter projection (24).

6. The rotary blade assembly, according to claim 1, wherein the recesses (11) defined in the annular blade (1) have a depth less than or equal to a total width of the annular blade (1).

7. The rotary blade assembly, according to claim 1, wherein the complementary projections and recesses in charge of preventing the relative rotation of the annular blade (1) with respect to the outer race (22) of the bearing (2) are arranged on surfaces that are faced in a radial direction of the annular blade (1) and of the outer race; defining complementary non-cylindrical shapes (26, 12).

8. The rotary blade assembly, according to claim 2, wherein the perimeter projection (24) of the outer race (22) of the bearing and the securing ring have thicknesses suitable for a centered arrangement of the annular blade with respect to the bearing.

9. The rotary blade assembly, according to claim 2, wherein the coupling projections (31) and the recesses (11) are defined on opposing side faces of the securing ring (3) and of the annular blade (1).

10. The rotary blade assembly, according to claim 3, wherein the coupling projections (31) and the recesses (11) are defined on opposing side faces of the securing ring (3) and of the annular blade (1).

11. The rotary blade assembly, according to claim 2, wherein the projections (25) configured to be housed in the recesses (11) of the annular blade (1) are defined on the side of the outer race (22) of the bearing corresponding to the perimeter projection (24).

12. The rotary blade assembly, according to claim 3, wherein the projections (25) configured to be housed in the recesses (11) of the annular blade (1) are defined on the side of the outer race (22) of the bearing corresponding to the perimeter projection (24).

13. The rotary blade assembly, according to claim 4, wherein the projections (25) configured to be housed in the recesses (11) of the annular blade (1) are defined on the side of the outer race (22) of the bearing corresponding to the perimeter projection (24).

14. The rotary blade assembly, according to claim 2, wherein the recesses (11) defined in the annular blade (1) have a depth less than or equal to a total width of the annular blade (1).

15. The rotary blade assembly, according to claim 3, wherein the recesses (11) defined in the annular blade (1) have a depth less than or equal to a total width of the annular blade (1).

16. The rotary blade assembly, according to claim 4, wherein the recesses (11) defined in the annular blade (1) have a depth less than or equal to a total width of the annular blade (1).

17. The rotary blade assembly, according to claim 5, wherein the recesses (11) defined in the annular blade (1) have a depth less than or equal to a total width of the annular blade (1).

18. The rotary blade assembly, according to claim 2, wherein the complementary projections and recesses in charge of preventing the relative rotation of the annular blade (1) with respect to the outer race (22) of the bearing (2) are arranged on surfaces that are faced in a radial direction of the annular blade (1) and of the outer race; defining complementary non-cylindrical shapes (26, 12).

19. The rotary blade assembly, according to claim 3, wherein the complementary projections and recesses in charge of preventing the relative rotation of the annular blade (1) with respect to the outer race (22) of the bearing (2) are arranged on surfaces that are faced in a radial direction of the annular blade (1) and of the outer race; defining complementary non-cylindrical shapes (26, 12).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] As a complement to the description provided herein, and for the purpose of helping to make the features of the invention more readily understandable, the present specification is accompanied by a set of drawings which, by way of illustration and not limitation, represent the following:

[0025] FIG. 1 shows a schematic elevation view of a first exemplary embodiment of the rotary blade assembly that can be used in tile-cutting machines, according to the invention, mounted by means of a shaft on a rod for coupling to a tile-cutting machine.

[0026] FIG. 2 shows a cross section elevation view of the blade assembly of FIG. 1 along a vertical plane.

[0027] FIG. 3 shows a perspective view of the blade assembly of FIG. 1 seen from the side carrying weldings, micro-weldings or interferences between the securing ring and the outer race of the bearing.

[0028] FIG. 4 shows an exploded perspective view of the blade assembly of FIG. 1.

[0029] FIGS. 5 and 6 show respective elevation views of a variant embodiment of the blade assembly, exploded and mounted respectively, in which the blade and the securing ring have been cross-sectioned along a vertical plane.

[0030] FIG. 7 shows an exploded perspective view of a variant embodiment of the blade assembly in which the projections and recesses in charge of preventing the relative rotation of the blade with respect to the outer side of the bearing define on the inner surface of the blade and on the surface of the outer race of the bearing respective geometric, complementary and non-cylindrical shapes, in this case, quadrangular shapes.

[0031] FIG. 8 shows an elevation view of the blade assembly of FIG. 7, mounted, and with the blade and the securing ring cross-sectioned along a vertical plane.

DETAILED DESCRIPTION

[0032] In the exemplary embodiment shown in FIGS. 1 to 4, the rotary blade assembly that can be used in tile-cutting machines comprises an annular blade (1) mounted on a bearing (2) which, as represented in FIG. 1, enables the rotation thereof with respect to a shaft (4) solidly attached to a rod (4) for securing said assembly to a tile-cutting machine (not shown).

[0033] In FIG. 2, the bearing (2) comprises: an inner race (21) with an axial bore for mounting thereof on the shaft (41), an outer race (22) and ball bearings (23) arranged between the inner race (21) and the outer race (22).

[0034] The outer race (22) of the bearing has a cylindrical outer surface provided on a first side with a perimeter projection (24), in a radial direction, that forms a first side stop for mounting the blade (1) on the part.

[0035] The securing of the blade (1) in the mounting position represented in FIG. 2 is carried out by means of a securing ring (3) mounted on a second side of the outer race (22) of the bearing (2) such that in the mounting position, the blade (1) is arranged between the perimeter projection (24) and the securing ring (3). The perimeter projection (24) of the outer race of the bearing and the securing ring (3) are dimensioned so that in the mounting position, the blade (1) is centred with respect to the median plane of the bearing (2).

[0036] As shown in FIG. 3, the securing ring (3) is secured to the outer race (22) of the bearing by means of welding, micro-welding or interference (5) that prevent the relative movement thereof.

[0037] As can be seen in FIGS. 2 and 4, the blade (1) and the securing ring (3) have complementary projections (31) and recesses (11) on the facing side surfaces thereof, which are coupled to each other in the mounting position, such that the blade (1) rotates solidly attached with the securing ring (3) and consequently with the outer race (22) of the bearing that is secured to said securing ring (3) by means of welding, micro-welding or interference (5).

[0038] In the variant embodiment shown in FIGS. 5 and 6, the side projections (25) intended to be housed in the recesses (11) of the blade (1) are defined on the side of the outer race (22) of the bearing corresponding to the perimeter projection (24).

[0039] It should be mentioned that the recesses (11) defined in the cutting disc (1) may have a depth less than the width of the blade (1), as shown in FIGS. 2 and 4; or be through recesses, with a depth equal to the total width of the blade (1), as shown in FIG. 5.

[0040] In the variant embodiment shown in FIGS. 7 and 8, the complementary projections and recesses in charge of preventing the relative rotation of the blade (1) with respect to the outer race (22) of the bearing (2) are located on the surfaces of the blade and of the outer race that are faced in a radial direction; defining complementary non-cylindrical shapes (26, 12), in this specific case, quadrangular shapes.

[0041] Having sufficiently described the nature of the invention, in addition to a preferred exemplary embodiment, it is hereby stated for the relevant purposes that the materials, shape, size and layout of the described elements may be modified, provided that it does not imply altering the essential features of the invention claimed below.