DEBURRING TOOL

Abstract

A deburring tool including a tool base body defining a blade shaft and a bar blade defining a cutting profile having a main cutting edge and a secondary cutting edge, wherein at least a portion of the main cutting edge and/or the secondary cutting edge is concave or convex, the bar blade is held in the blade shaft, and the deburring tool is configured to deburr a bevel gear.

Claims

1. A deburring tool, comprising a tool base body defining a blade shaft; and at least one bar blade defining a cutting profile having a main cutting edge and a secondary cutting edge, wherein at least portions of one or more of the main cutting edge or the secondary cutting edge are concave or convex; and wherein said at least one bar blade is held in the blade shaft and the deburring tool is configured to deburr a bevel gear.

2. The deburring tool according to claim 1, wherein the tool base body defines an axis of rotation thereof; and the at least one bar blade and the blade shaft each define a longitudinal extension thereof oriented one or more of substantially radially or substantially perpendicular to the axis of rotation.

3. The deburring tool according to claim 1, wherein one or more of (a) at least portions of one or more of the main cutting edge or the secondary cutting edge are convex and the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a concave flank of a bevel gear tooth; or (b) at least portions of one or more of the main cutting edge or the secondary cutting edge are concave and the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a convex flank of a bevel gear tooth.

4. The deburring tool according to claim 1, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to one or more of a convex flank or a concave flank of a bevel gear tooth in no more than five enveloping cuts.

5. The deburring tool according to claim 4, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to one or more of a convex flank or a concave flank of a bevel gear tooth in no more than three enveloping cuts.

6. The deburring tool according to claim 1, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a concave flank and a convex flank of a bevel gear tooth; and one or more of (a) at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are concave; or (b) at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are convex.

7. The deburring tool according to claim 1, wherein the at least one bar blade includes at least two circumferentially projecting bar blades spaced substantially equidistantly angularly relative to each other.

8. The deburring tool according to claim 1, wherein one or more of: at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are concave; at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are convex; at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are substantially straight; at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are substantially straight; at least portions of the main cutting edge are substantially straight and at least portions of the secondary cutting edge are convex; at least portions of the main cutting edge are substantially straight and at least portions of the secondary cutting edge are concave; at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are convex; or at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are concave.

9. The deburring tool according to claim 1, wherein (a) the at least one bar blade defines a head cutting edge between the main cutting edge and the secondary cutting edge, or (b) the at least one bar blade does not define a head cutting edge between the main cutting edge and the secondary cutting edge.

10. The deburring tool according to claim 9, wherein the head cutting edge is defined by a merger of the main cutting edge and the secondary cutting edge without steps.

11. The deburring tool according to claim 10, wherein at least portions of the head cutting edge are one or more of concave, convex or substantially straight.

12. The deburring tool according to claim 9, wherein the at least one bar blade does not define a head cutting edge between the main cutting edge and the secondary cutting edge and the main cutting edge and the secondary cutting edge converge at an acute angle to each other.

13. The deburring tool according to claim 1, wherein the tool base body defines a circumferential surface thereof and an axis of rotation thereof; at least portions of the blade shaft extend beyond the circumferential surface in a direction of the axis of rotation; and a portion of the at least one bar blade and the cutting profile projects outward of the circumferential surface.

14. The deburring tool according to claim 13, wherein the at least one bar blade and the blade shaft each define a longitudinal extension thereof oriented one or more of substantially radially or substantially perpendicular to the axis of rotation.

15. The deburring tool according to claim 13, wherein one or more of (a) at least portions of one or more of the main cutting edge or the secondary cutting edge are convex and the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a concave flank of a bevel gear tooth; or (b) at least portions of one or more of the main cutting edge or the secondary cutting edge are concave and the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a convex flank of a bevel gear tooth.

16. The deburring tool according to claim 13, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to one or more of a convex flank or a concave flank of a bevel gear tooth in no more than five enveloping cuts.

17. The deburring tool according to claim 16, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to one or more of a convex flank or a concave flank of a bevel gear tooth in no more than three enveloping cuts.

18. The deburring tool according to claim 13, wherein the at least one bar blade is configured to deburr one or more of a heel-side or a toe-side adjacent to a concave flank and a convex flank of a bevel gear tooth; and one or more of (a) at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are concave; or (b) at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are convex.

19. The deburring tool according to claim 13, wherein the at least one bar blade includes at least two circumferentially projecting bar blades spaced substantially equidistantly angularly relative to each other.

20. The deburring tool according to claim 13, wherein one or more of: at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are concave; at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are convex; at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are substantially straight; at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are substantially straight; at least portions of the main cutting edge are substantially straight and at least portions of the secondary cutting edge are convex; at least portions of the main cutting edge are substantially straight and at least portions of the secondary cutting edge are concave; at least portions of the main cutting edge are concave and at least portions of the secondary cutting edge are convex; or at least portions of the main cutting edge are convex and at least portions of the secondary cutting edge are concave.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Exemplary embodiments, which are understood not to be limiting, will be described in greater detail hereafter with reference to the drawings.

[0037] FIG. 1 a deburring tool for deburring a bevel gear in a front view;

[0038] FIG. 2 the deburring tool from FIG. 1 in a side view;

[0039] FIG. 3 another deburring tool for deburring a bevel gear in a front view;

[0040] FIG. 4 the deburring tool from FIG. 3 in a side view.

DETAILED DESCRIPTION

[0041] Terms are used in conjunction with the present description which are also used in relevant publications and patents. However, it is to be noted that the use of these terms is merely to serve for better comprehension. The inventive concepts and the scope of protection of the claims for protection are not to be restricted in the interpretation by the specific selection of the terms. The invention may be readily transferred to other term systems and/or technical fields. The terms are to be applied accordingly in other technical fields.

[0042] FIG. 1 shows deburring tool 2 for deburring a bevel gear. The deburring tool 2 has a tool base body 4 and four bar blades 6. The bar blades 6 are each arranged and clamped in an assigned blade shaft 8 of the tool base body 4, as shown as an example in the partial section according to FIG. 2.

[0043] Each of the bar blades 6 has a cutting edge profile 9, having a main cutting edge 10, a head cutting edge 12 and a secondary cutting edge 14, adjacent to a cutting face 15.

[0044] The main cutting edge 10 of each bar blade 6 is shaped concave. The secondary cutting edge 14 of each bar blade 6 is shaped convex.

[0045] To illustrate the concave or convex shape, the main cutting edge 10 and the secondary cutting edge 14 of the bar blade 6 shown in FIG. 1 in the upper image area are each assigned a dashed auxiliary line 16, 17, which represent a straight cutting edge profile as implemented in the prior art. Thus the main cutting edge 10 is set back concave to the adjacent auxiliary line 16. The secondary cutting edge 14 is convex over the auxiliary line 17, i.e. curved outwards. The shown cutting edge shape allows a reduced number of enveloping cuts when deburring a bevel gear.

[0046] As can be seen in FIG. 2, the blade shaft 8 of a respective bar blade 6, starting from a circumferential enveloping surface 18 of the tool base body 4, extends at least in sections in the direction of the axis of rotation R of the tool base body 4.

[0047] The bar blades 6 with their cutting profile 9 each extend projecting over the enveloping surface 18.

[0048] A longitudinal extension along a longitudinal axis L of a respective bar blade 6 and the associated blade shaft 8 is essentially radially oriented, starting from the axis of rotation R of the tool base body 4. A longitudinal axis L of a respective bar blade 6 and the associated blade shaft 8 extends essentially perpendicularly to the axis of rotation R of the tool base body 4.

[0049] The axis of rotation R is oriented in this case parallel to the y-axis of the displayed Cartesian coordinate system.

[0050] The deburring tool 2 has four circumferentially projecting bar blades 6, wherein the bar blades 6 are arranged relative to each other at equidistant angular distances.

[0051] The bar blades 6 are designed for deburring adjacent to the concave and convex flanks of the teeth of a bevel gear after soft machining of a bevel gear blank.

[0052] FIGS. 3 and 4 show a variant of a deburring tool 2 disclosed herein. Compared to the variant described above with reference to FIGS. 1 and 2, the blade shafts 8 and the bar blades 6 are still essentially radially extended, but oriented in a tilted or inclined manner. The bar blades 6, for example, are tilted as shown in FIG. 3 by less than 10 in relation to the illustration shown in FIG. 1, wherein the longitudinal axes L are disposed perpendicular to the axis of rotation R in FIG. 1 Similarly, as shown in FIG. 4, the bar blades 6 are tilted by less than 10 in relation to the illustration shown in FIG. 2, wherein the longitudinal axes L are disposed perpendicular to the axis of rotation R in FIG. 2.