Hole pattern gear hob

Abstract

The utility model provides a hole type gear hob, and belongs to the field of hobs. The utility model relates to a hobbing cutter which solves the problems that the abrasion of a cutter is accelerated, the quality of a machined surface is reduced and the dimensional accuracy of a workpiece is difficult to guarantee due to heat and high temperature generated by continuous friction between the hobbing cutter and the workpiece during the operation, and comprises a hobbing cutter shaft, a plurality of cutter rests surrounding the cutter shaft, and a plurality of cutter heads which are arranged in a spiral manner and are connected with the cutter rests, the cutting tool is characterized in that notches are formed in the two sides of the tool bit, inclined grooves extending to the side face of the tool bit are formed in one sides of the bottoms of the notches, air guide grooves extending to one end of the tool bit are formed in the other ends of the notches, air guide holes penetrating through the tool bit are formed in the air guide grooves, and cover plates are arranged on the air guide grooves. The cover plate is provided with an inclined wind shield used for guiding air into the air guide groove.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the hobbing cutter field, especially relates to a hole type gear hobbing cutter. BACKGROUND

[0002] The hobbing cutter is a kind of gear processing cutter, and the cutter tooth is arranged along the helix of cylinder or cone, the hobbing cutter is continuously rubbed with workpiece during operation, and thus heat is generated, high temperature can lead to cutter wear acceleration, and the machining surface quality is reduced, and the workpiece size precision is difficult to guarantee. SUMMARY

[0003] The utility model discloses a hole type gear hobbing cutter to solve the above-mentioned problems in the prior art.

[0004] The utility model discloses a hole type gear hobbing cutter, including hobbing cutter shaft, a plurality of encircle the cutter holder of cutter shaft and a plurality of spiral arrangement, and with the cutter holder is connected cutter head, its characterized in that, the cutter head both sides are all seted up with the notched, the notched bottom one side on seted up with the inclined slot extending to the side of cutter head;

[0005] The other end of the notched is provided with the gas guide groove extending to one end of the cutter head, and the gas guide groove is provided with the gas guide hole penetrating through the cutter head.

[0006] The gas guide groove is provided with a cover plate, and the cover plate is provided with an inclined wind deflector for guiding air into the gas guide groove.

[0007] In the hole type gear hobbing cutter, the inclination angle and inclination direction of the wind deflector are the same as those of the inclined slot.

[0008] In the hole type gear hobbing cutter, the wind deflector is trapezoidal, and the upper base is connected with the cover plate, and the waist is connected with the two sides of the gas guide groove.

[0009] In the hole type gear hobbing cutter, the cutter head on the side provided with the inclined slot is provided with a reinforcing plate for reinforcing the structure.

[0010] Compared with the prior art, the hole type gear hobbing cutter realizes air flow acceleration and heat dissipation through the gas guide groove, reduces the problems of cutter wear acceleration and workpiece size precision reduction caused by overheating. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the main body schematic diagram of the hole type gear hobbing cutter.

[0012] Figure 2 It is the hole type gear hobbing cutter local view.

[0013] Figure 3It is a partial sectional view of the present hole type gear hobbing cutter.

[0014] In the figure, 1, hobbing cutter shaft; 2, tool holder; 3, tool head; 4, notch; 5, inclined slot; 6, air guide groove; 7, air guide hole; 8, cover plate; 9, wind deflector; 10, reinforcing plate. DETAILED DESCRIPTION

[0015] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0016] As shown in Figure 1 , Figure 2 , Figure 3 , the present hole type gear hobbing cutter comprises a hobbing cutter shaft 1, a plurality of tool holders 2 surrounding the tool shaft, and a plurality of tool heads 3 arranged in a spiral and connected with the tool holders 2, both sides of the tool head 3 are provided with notches 4, and an inclined slot 5 extending to the side surface of the tool head 3 is arranged on one side of the bottom of the notch 4.

[0017] An air guide groove 6 extending to one end of the tool head 3 is arranged on the other end of the notch 4, and an air guide hole 7 penetrating through the tool head 3 is arranged on the air guide groove 6.

[0018] A cover plate 8 is arranged on the air guide groove, and an inclined wind deflector 9 for guiding air into the air guide groove is arranged on the cover plate.

[0019] During the rotation of the hobbing cutter shaft 1, the tool head 3 will push the air to both sides when it contacts the air, and a momentary low pressure is formed at the notch 4, so that the air is gathered to the notch 4, and when it continues to rotate, the wind deflector 9 guides the air into the air guide groove, and the air is discharged through the air guide hole 7, realizing air circulation.

[0020] Further, the inclination angle and direction of the wind deflector 9 are the same as those of the inclined slot 5.

[0021] Further, the wind deflector 9 is trapezoidal, and the upper base is connected with the cover plate 8, and the waist is connected with both sides of the air guide groove, so that it covers the notch 4 and effectively guides the air in the notch 4 into the air guide groove.

[0022] A reinforcing plate 10 for strengthening the structure is arranged in the tool head 3 on the side provided with the inclined slot 5.

[0023] The specific embodiments described in this paper are only illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0024] Although the terms cutter shaft 1, cutter holder 2, cutter head 3, notch 4, inclined slot 5, air guide slot 6, air guide hole 7, cover plate 8, wind deflector 9, reinforcing plate 10 are used more frequently in this document, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the utility model; any kind of additional limitation by interpreting them is contrary to the spirit of the utility model.

Claims

1. A type of gear hob, comprising a hob shaft (1), a plurality of tool holders (2) surrounding the hob shaft, and a plurality of helically arranged cutting heads (3) connected to the tool holders (2), characterized in that, The cutter head (3) has slots (4) on both sides, and a slanted groove (5) extending to the side of the cutter head (3) is provided on one side of the bottom of the slot (4). An air guide groove (6) extending to one end of the cutter head (3) is provided on the other end of the groove (4), and an air guide hole (7) penetrating the cutter head (3) is provided on the air guide groove (6). The air guide groove is provided with a cover plate (8), and the cover plate (8) is provided with an inclined baffle plate (9) for guiding air into the air guide groove (6).

2. The bore-type gear hob according to claim 1, characterized in that, The tilt angle and tilt direction of the wind deflector (9) are the same as those of the inclined groove (5).

3. The bore-type gear hob according to claim 1, characterized in that, The wind deflector (9) is trapezoidal, with its top bottom connected to the cover plate (8) and its waist connected to both sides of the air guide groove.

4. A bore-type gear hob according to claim 1, characterized in that, A reinforcing plate (10) for strengthening the structure is provided inside the cutter head (3) located on the side where the inclined groove (5) is provided.

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