CN218016215U

CN218016215U - But transposition gear hobbing cutter of super large modulus efficient

Info

Publication number: CN218016215U
Application number: CN202222656874.5U
Authority: CN
Inventors: 杨永德; 黄鑫
Original assignee: Harbin Shanna Tool Manufacturing Co ltd
Current assignee: Harbin Shanna Tool Manufacturing Co ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2022-12-13
Anticipated expiration: 2032-10-10

Abstract

An indexable gear hob with an ultra-large modulus and high efficiency relates to a gear machining cutter. The numerical control indexable gear hob solves the problem that the number of effective teeth on the circumference of the traditional indexable gear hob with the ultra-large modulus is less than 12 under the condition of the same diameter. The utility model discloses a but transposition carbide tooth top minor blade is established in transposition carbide tooth side blade head position, but transposition carbide tooth top minor blade and transposition carbide tooth side blade sharing sword groove. The utility model discloses under the not big circumstances of same diameter or diameter change, effective blade quantity of cutter body circumference is more than or equal to 12, has solved production extension alloy blade and hobbing cutter diameter and has need increase the problem that very big wait is with high costs, has saved the manufacturing cost's of hobbing cutter advantage.

Description

But transposition gear hobbing cutter of super large modulus efficient

Technical Field

The utility model relates to a gear machining cutter, concretely relates to but transposition gear hobbing cutter of super large modulus efficient.

Background

At present, the application of the indexable gear hob is very common, wherein the lapping form of the normal tooth profile of the indexable gear hob with the module M10 to M25 basically adopts the lapping form of the left and right side blades, the diameter of the hob body is between 240 and 320, the tooth top blade and the tooth side blade both process the tooth root part of the gear, the effective processing blade at the tooth root of the gear for circumferential cutting of the hob can be basically ensured to be more than 12 blades, because the length of the left and right side blades increases along with the increase of the module, when the module is greater than M25, the length of the tooth side blade is generally greater than 80mm, which is very difficult for the manufacture of hard alloy, and the manufacture stability is not ideal, the rejection rate is high, the cost waste is very serious, the popularization and the application of the hob are realized, therefore, when the design is carried out, only the tooth top blade processes the root arc part of the gear, the tooth side blade processes the tooth root part of the gear, the roughness of the tooth root part of the tooth side blade of the gear is feasible under the condition that the roughness requirement on the gear surface roughness at the gear surface is not high, but the requirement on the tooth root surface roughness at the quick development of the gear technology is also greatly increased, the requirement of the existing hob body is greatly reduced, and the requirement on the tooth root diameter of the tooth root part of the gear can be greatly reduced by the requirement of the tooth of the gear is also reduced by the existing hob body is greatly. Therefore, a transposable high-efficiency gear hob which meets the requirements and has a high cost performance and a large modulus is urgently needed to be developed, the surface roughness of the root part of the machined gear can be greatly improved, the strength of the wind power gear box is improved, the development of the wind power industry is greatly assisted, and meanwhile, the production and machining cost of the cutter and the use cost of a user can be greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the cutter body circumference effective blade that solves super large modulus hobbing cutter under the unchangeable or little condition of change of cutter body diameter and be small in quantity, by the roughness of processing gear tooth root low, the problem that can not satisfy the requirement of the continuous surface roughness who enlarges to gear root of the rapid development of wind-powered electricity generation technique and installed capacity provides a but super large modulus efficient transposition gear hobbing cutter, and the concrete technical scheme who solves this problem is as follows:

the utility model discloses an indexable gear hobbing cutter of super large modulus efficient, by the spiral cutter body, indexable carbide tooth flank blade, indexable carbide tooth flank tip little blade, indexable carbide tooth flank tip big blade and tooth flank blade housing screw constitute, indexable carbide tooth flank tip little blade is established in the head position of indexable carbide tooth flank blade, indexable carbide tooth flank tip little blade and indexable carbide tooth flank blade share a sword groove, the sword inslot is opened there is the screw, indexable carbide tooth flank tip little blade is opened there is the screw clearance hole, indexable carbide tooth flank tip little blade is fixed it on the spiral cutter body through the screw of blade screw clearance hole with the sword inslot by tooth flank blade housing screw, indexable carbide tooth flank blade and indexable carbide tooth flank tip little blade evenly arrange the top in the circumference both sides of spiral cutter body, indexable carbide tooth flank blade, indexable carbide tooth flank tip little blade and indexable carbide tooth flank tip big blade constitute the normal direction profile of tooth gear hobbing cutter.

The utility model discloses an indexable gear hobbing cutter of super large modulus efficient, adopt indexable carbide addendum small blade to establish on the head of indexable carbide flank blade, small indexable carbide addendum blade and indexable carbide flank blade sharing sword groove, can know according to the development principle, indexable carbide addendum small blade and the big blade combined action of indexable carbide addendum have increased the quantity of processing tooth root department blade, make the effective blade of processing tooth root circular arc department be greater than or equal to 12 pieces, can effectively improve the surface roughness of tooth root department, high machining efficiency, this design is compared with traditional design and has not only guaranteed indexable carbide flank blade under the condition that does not increase length, the quantity of indexable carbide addendum blade has been increased, again with the cutter body diameter control between 320 phi 360 ~ phi, the requirement of wind-powered electricity generation field development to gear root intensity has been reached, user's use cost and the manufacturing cost of cutter factory have also been reduced simultaneously.

Drawings

Fig. 1 is a front view of the present invention, fig. 2 is a left side view of fig. 1, fig. 3 is a normal tooth profile view of an indexable cemented carbide tip plate, and an indexable carbide tip plate, fig. 4 is a front view of the indexable cemented carbide tip plate, fig. 5 is a top view of fig. 4, fig. 6 is a front view of the indexable cemented carbide tip plate, fig. 7 is a top view of fig. 6, fig. 8 is a front view of the indexable cemented carbide tip plate, fig. 9 is a top view of fig. 8, fig. 10 is a 3D view of the hob, fig. 11 is an assembled front view of the indexable cemented carbide tip plate and the indexable carbide tip plate, and fig. 12 is a top view of fig. 11. In the figure, 2-1 is a screw clearance hole of the indexable hard alloy tooth side blade, and 4-1 is a screw clearance hole of the indexable hard alloy tooth top big blade.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 10. The indexable hard alloy addendum small blade 3 is arranged at the head position of the indexable hard alloy addendum side blade 2, the indexable hard alloy addendum small blade 3 and the indexable hard alloy addendum side blade 2 share one cutter groove, a screw hole is arranged in the cutter groove, a screw clearance hole 3-1 is arranged on the indexable hard alloy addendum small blade 3, the indexable hard alloy addendum small blade 3 is fixed on the top of two sides of the circumference of the spiral cutter body 1 through the addendum blade clearance hole 3-1 and the cutter groove by the addendum blade hold-down screw 5, the indexable hard alloy addendum small blade 2, the indexable hard alloy addendum small blade 3 and the indexable hard alloy addendum large blade 4 are uniformly arranged at the top of two sides of the circumference of the spiral cutter body 1, and the indexable hard alloy addendum side blade 2, the indexable hard alloy addendum small blade 3 and the indexable hard alloy addendum large blade 4 form the addendum gear addendum of the hob gear.

The second embodiment is as follows: this embodiment is described in conjunction with fig. 1, 2, 3, and 10. The indexable hard alloy addendum tip 3 of the present embodiment is designed to be a two-indexing type of tip having the same circular arc as that of the indexable hard alloy addendum tip 4, so that the small-sized addendum tip is well-developed in production and manufacture, and the cost is easily controlled within a reasonable range.

The third concrete implementation mode: this embodiment will be described with reference to fig. 11 and 12. The left end of the indexable hard alloy tooth top small blade 3 is jointed and aligned with the right end of the indexable hard alloy tooth side blade 2, and the other two positioning surfaces of the indexable hard alloy tooth top small blade 3 are respectively jointed on the bottom surface and the side surface of the cutter groove.

The fourth concrete implementation mode is as follows: the present embodiment is described with reference to fig. 1, 2, 3, and 10. The indexable hard alloy tooth top small blade 3 and the indexable hard alloy tooth top large blade 4 are combined to jointly process the tooth root part of the gear, so that the number of effective blades arranged on the circumference of the cutter body is more than or equal to 12.

The fourth concrete implementation mode: this embodiment is described in conjunction with fig. 3. The arrangement form of the indexable hard alloy inserts according to the present embodiment is suitable for gear machining with a normal modulus of more than Mn 25.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3. The indexable hard alloy addendum small blade 3, the indexable hard alloy addendum large blade 4 and the indexable hard alloy tooth side blade 2 described in the present embodiment form a normal tooth profile of the indexable gear hob.

The sixth specific implementation mode is as follows: this embodiment will be described with reference to fig. 1 and 2. The indexable hard alloy addendum small blades 3, the indexable hard alloy tooth side blades 2 and the indexable hard alloy addendum large blades 4 are arranged in a staggered manner on the circumference of the cutter body.

The seventh concrete implementation mode: this embodiment will be described with reference to fig. 1 and 2. The spiral cutter body 1 in the embodiment is of an integral structure, and adopts inner hole and end face positioning, and axial key grooves and spiral end heads for auxiliary positioning.

The mounting sequence of the indexable hard alloy tooth side blade 2 and the indexable hard alloy tooth top small blade 3 is as follows: the indexable hard alloy tooth side blade 2 is installed firstly, and then the indexable hard alloy tooth top small blade 3 is installed, and the disassembly sequence is opposite.

The above embodiments are merely exemplary and not intended to limit the present invention, and it should be noted that various other changes, modifications, substitutions and variations which are equivalent to those skilled in the art and suggested by the technical solution provided by the present invention should be considered as the protection scope of the present invention.

Claims

1. The utility model provides an indexable gear hobbing cutter of super large module efficient, it comprises spiral cutter body, indexable carbide flank of tooth blade, indexable carbide tooth top small blade, indexable carbide tooth top large blade and tooth top blade housing screw, its characterized in that: the indexable hard alloy tooth top small blade is arranged at the head position of the indexable hard alloy tooth side blade, the indexable hard alloy tooth top small blade and the indexable hard alloy tooth side blade share a cutter groove, a screw hole is formed in the cutter groove, a screw clearance hole is formed in the indexable hard alloy tooth top small blade, the indexable hard alloy tooth top small blade is fixed on the spiral cutter body through a tooth top blade pressing screw via the blade screw clearance hole and the screw hole in the cutter groove, the indexable hard alloy tooth side blade, the indexable hard alloy tooth top small blade and the indexable hard alloy tooth top large blade are uniformly arranged at the tops of two sides of the circumference of the spiral cutter body, and the indexable hard alloy tooth side blade, the indexable hard alloy tooth top small blade and the indexable hard alloy tooth top large blade form a normal tooth form of the indexable gear hob.

2. The indexable gear hob with ultra-large module and high efficiency as claimed in claim 1, wherein: the indexable hard alloy addendum small blade is designed into two indexing forms of the small blade which is the same as the circular arc of the indexable hard alloy addendum large blade.

3. The indexable gear hob with ultra-large modulus and high efficiency as claimed in claim 1, characterized in that: the left end of the indexable hard alloy tooth top small blade is attached to the right end of the indexable hard alloy tooth side blade in alignment, and the other two positioning surfaces of the indexable hard alloy tooth top small blade are respectively attached to the bottom surface and the side surface of the cutter groove.

4. The indexable gear hob with ultra-large modulus and high efficiency as claimed in claim 1, characterized in that: the effective blades of the indexable hard alloy addendum small blade and the indexable hard alloy addendum large blade which are arranged on the circumference of the spiral cutter body are more than or equal to 12.

5. The indexable gear hob with ultra-large modulus and high efficiency as claimed in claim 1, characterized in that: the arrangement form of the indexable hard alloy blades is suitable for gear workpieces with the normal modulus larger than Mn 25.

6. The indexable gear hob with ultra-large modulus and high efficiency as claimed in claim 1, characterized in that: the small indexable hard alloy addendum blades, the indexable hard alloy tooth side blades and the indexable hard alloy addendum blades are arranged on the circumference of the cutter body in a staggered manner.

7. The indexable gear hob with ultra-large module and high efficiency as claimed in claim 1, wherein: the spiral cutter body is of an integral structure, and the inner hole and the end face are used for positioning, and the axial key groove and the spiral end head are used for assisting in positioning.