Split rack hob

Abstract

The utility model provides a split type rack hob, and belongs to the field of hobs. The utility model relates to a novel rack hob, in particular to a novel rack hob which solves the problems that in the using process, a rack hob can be abraded and fractured possibly, the hob cannot be repeatedly used, the whole hob needs to be replaced, and waste is caused, and the novel rack hob comprises a hob shaft and a plurality of hob strips which are spliced with one another. The hob shaft is provided with a plurality of annularly arranged mounting channels, the hob strips are provided with mounting parts matched with the mounting channels, one side edge of each hob strip is provided with a limiting part, the other side edge of each hob strip is provided with a limiting groove used for being matched with the limiting part, the two sides of each mounting part are each provided with a hollow-out groove, and the hollow-out grooves are matched with the limiting parts. Triangular tensile parts are arranged on the two sides of the interior of the mounting part, one side edge of each tensile part is located on the outer side of the mounting part, and the two ends of the tensile part located on the outer side are located on the two sides of the hollowed-out groove.

Description

Technical Field

[0001] This utility model belongs to the field of hobbing cutters, and specifically relates to a split rack hobbing cutter. Background Technology

[0002] Rack hobs are cutting tools used to machine spur and helical cylindrical gears based on the meshing principle of helical gears. During use, rack hobs may wear out and break, making them unusable and requiring the entire hob to be replaced, which is wasteful. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a split rack hob.

[0004] The purpose of this utility model can be achieved through the following technical solution: a split rack hob, including a hob shaft and several hob strips spliced ​​together, characterized in that the hob shaft is provided with several mounting grooves arranged in a ring, and the hob strips are provided with mounting parts that cooperate with the mounting grooves.

[0005] The hobbing cutter bar has a limiting part on one side and a limiting groove for cooperating with the limiting part on the other side.

[0006] The mounting part has hollowed-out grooves on both sides, and triangular tensile parts are provided on both sides inside the mounting part. One side of the tensile part is located on the outside of the mounting part, and the two ends of the tensile part on the outside are located on both sides of the hollowed-out groove.

[0007] In the aforementioned split-type rack hob, mounting seats are provided at both ends of the hob shaft, the mounting seats are connected to the hob shaft, and the mounting seats are provided with cover plates for limiting the hob strip.

[0008] In the aforementioned split-type rack hob, the cover plate and the mounting base are connected by threads, and the locking direction of the threads is consistent with the rotation direction of the hob shaft.

[0009] In the aforementioned split rack hob, the limiting part is trapezoidal in shape, and an anti-wear part is provided on its outer edge.

[0010] In the aforementioned split-type rack hob, the mounting part and the mounting groove are mutually locked and engaged.

[0011] Compared with existing technologies, this split rack hob can be used again after damage by simply replacing the damaged hob blade, which greatly saves costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main body of this split rack hob;

[0013] Figure 2 This is a cross-sectional view of this split rack hob;

[0014] Figure 3 This is a cross-sectional view of the upper part of this split rack hob.

[0015] In the figure, 1 is the hob shaft; 2 is the hob strip; 3 is the mounting groove; 4 is the mounting part; 5 is the limiting part; 6 is the limiting groove; 7 is the hollow groove; 8 is the tensile part; 9 is the mounting base; 10 is the cover plate; and 11 is the wear-resistant part. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, this split rack hob includes a hob shaft 1 and several hob strips 2 spliced ​​together. The hob shaft 1 has several mounting grooves 3 arranged in a ring, and the hob strips 2 are provided with mounting parts 4 that cooperate with the mounting grooves 3.

[0018] A limiting part 5 is provided on one side of the hobbing bar 2, and a limiting groove 6 for cooperating with the limiting part 5 is provided on the other side.

[0019] Both sides of the mounting part 4 are provided with hollow grooves 7, and both sides of the interior of the mounting part 4 are provided with triangular tensile parts 8. One side of the tensile part 8 is located on the outside of the mounting part 4, and the two ends of the tensile part 8 located on the outside are located on both sides of the hollow groove 7. Since the mounting part 4 will be subjected to centrifugal force during the rotation of the rack hob, the force on the hollow groove 7 is relatively large. The tensile part 8 bears the force, reducing the damage to the mounting part 4.

[0020] The hob shaft 1 is provided with mounting seats 9 at both ends. The mounting seats 9 are provided with cover plates 10 for limiting the hob strip 2. When replacement is required, the cover plates 10 at both ends are screwed off and the damaged hob strip 2 is removed and replaced.

[0021] Preferably, the mounting part 4 can be made of a material with high tensile strength, such as low carbon steel.

[0022] Preferably, the cover plate 10 and the mounting base 9 are connected by threads, and the locking direction of the threads is consistent with the rotation direction of the hob shaft 1.

[0023] Preferably, the limiting part 5 is trapezoidal in shape, and an anti-wear part 11 is provided on its outer edge. It is made of a more robust and wear-resistant material, such as high manganese steel or titanium alloy, to reduce wear and prevent gaps from forming between the limiting part 5 and the limiting groove 6, thereby affecting its use.

[0024] Preferably, the mounting part 4 and the mounting channel 3 are mutually locked and engaged.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document frequently uses terms such as hob shaft 1, hob strip 2, mounting groove 3, mounting part 4, limiting part 5, limiting groove 6, hollow groove 7, tensile part 8, mounting base 9, cover plate 10, and wear-resistant part 11, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A split rack hob comprising a hob shaft (1) and a plurality of hob segments (2) which are joined to one another, characterized in that The rolling cutter shaft (1) is provided with a plurality of annularly arranged installation grooves (3), and the rolling cutter strip (2) is provided with an installation part (4) matched with the installation grooves (3); The rolling cutter strip (2) is provided with a limiting part (5) on one side edge and a limiting groove (6) matched with the limiting part (5) on the other side edge; The installation part (4) is provided with hollow grooves (7) on both sides, and the installation part (4) is provided with triangular anti-tension parts (8) on both sides, one side edge of the anti-tension part (8) is located outside the installation part (4), and both ends of the anti-tension part (8) located outside are located on both sides of the hollow groove (7).

2. A split rack hob according to claim 1, wherein, The rolling cutter shaft (1) is provided with an installation seat (9) on both ends, the installation seat (9) is connected with the rolling cutter shaft (1), and the installation seat (9) is provided with a cover plate (10) for limiting the rolling cutter strip (2).

3. A split rack hob according to claim 2, wherein, The cover plate (10) is connected with the installation seat (9) through threads, and the thread locking direction is consistent with the rotating direction of the rolling cutter shaft (1).

4. A split rack hob according to claim 1 wherein, The limiting part (5) is in a trapezoidal shape, and is provided with an anti-wear part (11) on the outer edge.

5. The split rack hob according to claim 1, wherein, The installation part (4) and the installation groove (3) are limited and clamped with each other.

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