CN220388141U - Gear hob of medium and small modulus - Google Patents
Gear hob of medium and small modulus Download PDFInfo
- Publication number
- CN220388141U CN220388141U CN202321561767.2U CN202321561767U CN220388141U CN 220388141 U CN220388141 U CN 220388141U CN 202321561767 U CN202321561767 U CN 202321561767U CN 220388141 U CN220388141 U CN 220388141U
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- Prior art keywords
- blade
- indexable
- hob
- hard alloy
- gear
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 238000003754 machining Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 18
- 208000010727 head pressing Diseases 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
A high-efficiency high-precision gear hob with small modulus relates to a gear machining tool. The hob solves the problems that the service life of the traditional hob is low, some workpieces are not machined, and the diameter of the hob cannot be greatly limited by a machine tool and the workpieces. The positioning surface of the indexable hard alloy blade is provided with a V-shaped alpha angle and a V-shaped beta angle, and the left surface and the right surface of the blade compacting block have an included angle theta. The utility model solves the problem of the limited diameter of the traditional hob, has the advantages of high efficiency, high precision and high cost performance, is convenient to disassemble, and simultaneously improves the product quality of users.
Description
Technical Field
The utility model relates to a gear machining cutter, in particular to a gear hob with a small and medium modulus.
Background
Currently, the application of indexable gear carbide hobs is very popular, and as the gear industry is continuously updating and improving the processing technology of gears, the influence on the cutter is obvious, namely the hardness and precision of cutter materials are greatly reduced along with the continuous increase of the hardness of processed materials, and the service life of a workpiece processed by the traditional hob materials in a high-speed steel form is greatly reduced, and even one workpiece is not processed, under the severe condition, the precision of the cutter is difficult to ensure naturally, and under the condition that the cutter is limited by a machine tool and the processed workpiece (such as the blank limitation of a herringbone tooth), and the like, the diameter of the cutter cannot be made large, and the cost for manufacturing the integral carbide alloy form is particularly high. Therefore, the effective number of teeth for processing the conventional hob with left and right lap joint is limited, and development of a novel hob suitable for the above requirements is urgently needed to meet the above requirements.
Disclosure of Invention
The utility model aims to solve the problems that the gear industry is continuously updated and improved on the processing technology of gears, wherein the influence on the cutter is obvious that the hardness and the precision of cutter materials are greatly reduced along with the continuous increase of the hardness of the materials, the service life of a workpiece processed by the traditional high-speed steel hob materials is greatly reduced, even one workpiece is not completely processed, under the severe condition, the precision of the cutter is difficult to ensure, and is limited by a machine tool and the workpiece, the diameter of the cutter cannot be made larger, so that the number of effective teeth for processing of the hob in the traditional left-right lap joint mode is limited, the modulus M5 is limited by the tooth form and cannot be made into an indexable hob in the left-right lap joint mode, and a novel small-modulus gear hob is urgently designed due to the limitation, and the specific technical scheme for solving the problem is as follows:
the utility model relates to a gear hob with medium and small modulus, which consists of a spiral hob body, an indexable integral hard alloy blade, a blade compacting block and double-head compacting screws, wherein the positioning surface of the indexable integral hard alloy blade is provided with a V-shaped alpha angle, a hob slot is also V-shaped, the blade compacting block is placed in the compacting slot, the left side of the blade compacting block is jointed with the right side of the indexable integral hard alloy blade, the right positioning surface of the blade compacting block is jointed with the positioning surface of the compacting slot, an included angle theta is arranged between the left and right surfaces of the blade compacting block, the bottom positioning surface of the indexable integral hard alloy blade is provided with a beta angle, and the indexable integral hard alloy blade is compacted by rotating the double-head compacting screws and is uniformly distributed on the circumferential inclined surface of the spiral hob body to form the normal tooth shape of the gear hob.
According to the gear hob with the medium and small modulus, the indexable integral hard alloy blades are arranged at the circumferential position of the spiral cutter body, the structural form of the indexable integral hard alloy blades is doubled relative to the left and right arrangement forms, so that the arrangement of the effective number of teeth on the circumference of the gear hob can be ensured under the condition that the diameter of a cutter is small, the V-shaped alpha angle positioning of the indexable integral hard alloy blades ensures the stability of the indexable integral hard alloy blades, the problem of tooth swing caused by positioning is avoided, and the beta angle of the bottom surface of the indexable integral hard alloy blades can prevent the problem of overlarge tooth errors and loose blades caused by tilting of the roots of the indexable hard alloy blades in the processing process. Compared with the traditional lap-joint hob, the hob has the advantages that the diameter can be made small, the modulus can be made small, the left tooth profile and the right tooth profile are integrally arranged, the machining precision is high, the strength is good, the hob is very suitable for the production and the manufacture of small and medium-sized gears with the modulus of M10 or below, the hob is very beneficial to a machine tool with small hobbing machine and poor machine tool rigidity, and the hob is suitable for machining parts with small requirements on the diameter of a cutter, herringbone tooth parts and small machine tools.
Drawings
Fig. 1 is a front view of the present utility model, fig. 2 is a left side view of fig. 1, fig. 3 is a normal tooth profile of a gear hob composed of an indexable cemented carbide insert, fig. 4 is a front view of the indexable cemented carbide insert, fig. 5 is a left side view of fig. 4, fig. 6 is a top view of fig. 4, fig. 7 is a 3D view of fig. 4, fig. 8 is a front view of a insert compact, fig. 9 is a left side view of fig. 8, fig. 10 is a top view of fig. 8, fig. 11 is a 3D view of the insert compact, and fig. 12 is an assembled view of the indexable cemented carbide insert and the insert compact.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 12. The rotary double-headed screw 4 is used for pressing the indexable cemented carbide blade 2 on the inclined plane of the circumference of the spiral blade body 1, and is characterized in that the rotary double-headed screw 4 is used for pressing the indexable cemented carbide blade 2 on the inclined plane of the circumference of the spiral blade body 1, and the rotary double-headed screw 4 is used for pressing the indexable cemented carbide blade 2 on the inclined plane of the circumference of the spiral blade body 1.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1, 2, 3, and 10. The positioning surface of the indexable integral cemented carbide insert 2 according to the present embodiment has a V-shaped angle α of 110 to 130 degrees, the bottom positioning surface of the indexable integral cemented carbide insert 2 has a β angle of 2 to 5 degrees, and an included angle θ is 10 to 20 degrees between the left and right surfaces of the insert pressing block 3.
And a third specific embodiment: the present embodiment is described with reference to fig. 1, 2, 3, and 10. The indexable cemented carbide blade 2 in the embodiment adopts V-shaped positioning at the alpha angle, and the blade pressing block 3 is pressed by rotating the double-head pressing screw 4, so that the indexable cemented carbide blade 2 is ensured to be positioned accurately.
The specific embodiment IV is as follows: the present embodiment is described with reference to fig. 11 and 12. The gear hob according to the present embodiment is suitable for gear processing work pieces having a module M3 to a module M10.
Fifth embodiment: this embodiment will be described with reference to fig. 1 and 2. The gear hob indexable cemented carbide blade 2 and the blade compacting block 3 are combined and arranged in an equal-dividing way along the circumference of the spiral cutter body, and the left and right cutting edges of the indexable cemented carbide blade 2 participate in cutting at the same time.
Specific embodiment six: the present embodiment is described with reference to fig. 1, 2, 3, and 10. The spiral cutter body 1 in the embodiment is of an integral structure, and adopts an inner hole and end face positioning, an axial key groove and a spiral end head auxiliary positioning.
Specific embodiment six: the present embodiment is described with reference to fig. 1, 2, 3, and 10. The spiral cutter body 1 according to the present embodiment has an integral structure, the diameter of the spiral cutter body 1 is made small, and the diameter of the modulus 3 can be more than D80.
Indexable cemented carbide insert mounting:
the installation sequence of the indexable hard alloy blade 2 and the blade compacting block 3 is as follows: firstly placing the indexable hard alloy blade 2, screwing the double-ended pressing screw 4 into the blade pressing block 3 in a left-hand way, screwing the double-ended pressing screw into a screw hole of the pressing block groove in a right-hand way, continuously rotating the double-ended screw to press the indexable hard alloy blade 2, loosening the rotating double-ended pressing screw 4 in the disassembly sequence, taking out the indexable hard alloy blade 2 for replacement after loosening one circle to two circles, and then pressing the rotating double-ended pressing screw 4.
The above embodiments are illustrative only and not limiting to the utility model, and it should be pointed out that other equivalent variations, modifications, substitutions and alterations will be apparent to those skilled in the art, given the benefit of the teachings of this utility model.
Claims (5)
1. The utility model provides a gear hobbing cutter of medium and small modulus, it comprises spiral cutter body, indexable stereoplasm whole alloy blade, blade compact heap and rotatory double-end hold-down screw, its characterized in that: the locating surface of the indexable integral hard alloy blade is provided with a V-shaped alpha angle, the cutter groove is also V-shaped, the blade pressing block is placed in the pressing block groove, the left side of the blade pressing block is attached to the right side of the indexable integral hard alloy blade, the right locating surface of the blade pressing block is attached to the locating surface of the pressing block groove, an included angle theta is formed between the left side and the right side of the blade pressing block, the bottom locating surface of the indexable integral hard alloy blade is provided with a beta angle, the indexable integral hard alloy blade is pressed by the rotary double-head pressing screw, and the indexable integral hard alloy blade is uniformly distributed on the inclined surface of the circumference of the spiral cutter body to form the normal tooth shape of the gear hob.
2. A gear hob with small modulus according to claim 1, characterized in that: the positioning surface of the indexable integral hard alloy blade is provided with a V-shaped alpha angle of 110-130 degrees.
3. A gear hob with small modulus according to claim 1, characterized in that: the bottom locating surface of the indexable integral hard alloy blade is provided with a beta angle of 2-5 degrees.
4. A gear hob with small modulus according to claim 1, characterized in that: the included angle theta between the left and right sides of the blade compacting block is 10-20 degrees.
5. A gear hob with small modulus according to claim 1, characterized in that: the gear hob is suitable for gear machining workpieces with the modulus of M3-M10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561767.2U CN220388141U (en) | 2023-06-19 | 2023-06-19 | Gear hob of medium and small modulus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561767.2U CN220388141U (en) | 2023-06-19 | 2023-06-19 | Gear hob of medium and small modulus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220388141U true CN220388141U (en) | 2024-01-26 |
Family
ID=89604556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321561767.2U Active CN220388141U (en) | 2023-06-19 | 2023-06-19 | Gear hob of medium and small modulus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220388141U (en) |
-
2023
- 2023-06-19 CN CN202321561767.2U patent/CN220388141U/en active Active
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