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Roughing and finishing integrated hard alloy dry-cutting hob

A technology of hard alloy and hob, which is applied in the direction of metal processing equipment, gear tooth manufacturing equipment, gear teeth, etc., can solve the problems of low machining accuracy, high tool change cost, and low cutting efficiency, so as to improve the quality of grinding, Reduce tool change costs and improve cutting efficiency

Inactive Publication Date: 2020-11-13
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a coarse and fine integrated cemented carbide dry cutting hob for the problems of low machining accuracy, high tool change cost, and low cutting efficiency in the existing gear hobbing process.

Method used

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  • Roughing and finishing integrated hard alloy dry-cutting hob
  • Roughing and finishing integrated hard alloy dry-cutting hob
  • Roughing and finishing integrated hard alloy dry-cutting hob

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specific Embodiment approach 1

[0023] Specific implementation mode one: as Figure 1-Figure 5 As shown, this embodiment discloses a coarse and fine integrated cemented carbide dry cutting hob, including a hob main body 1, a rough machining hob set 3 and a finishing hob set 2, the center of the hob main body 1 is along the A hob positioning hole 4 is provided in the axial direction; the hob main body 1, the rough machining hob unit 3 and the finishing hob unit 2 are all made of hard alloy, and the inner wall of the hob positioning hole 4 is provided with a The keyway 5 connected by the key, the hob main body 1 is detachably and fixedly connected with the rough machining hob set 3 and the finish machining hob set 2 (the application of the finish machining hob set 2 can reduce or replace honing process, reduce gear processing time, reduce gear processing costs, and improve gear processing efficiency), the outer circular surface of the rough machining hob group 3 is evenly equipped with a plurality of V-shaped ...

specific Embodiment approach 2

[0024] Specific implementation mode two: as figure 1 , figure 2 and Figure 4 As shown, this embodiment is a further description of specific embodiment 1. The rough machining hob unit 3 is evenly distributed with a plurality of rough machining fixing bolt holes 9 in the radial direction, and the plurality of rough machining fixing bolt holes 9 9 are all arranged at the bottom of the corresponding V-shaped rough machining hob chip pocket 10; the finishing hob unit 2 is evenly arranged with a plurality of finishing bolt holes 6 along the radial direction, and the multiple finishing The fixing bolt holes 6 are all set at the bottom of the corresponding V-shaped finishing hob chip pocket 7 (with the functions of fixing the hob and transmitting torque, and at the same time, the user can customize the installation according to the required tool length and efficient tool shifting method The position of the hob can prolong the service life of the tool and improve the consistency of...

specific Embodiment approach 3

[0025] Specific implementation mode three: as figure 2 and Figure 4 As shown, this embodiment is a further description of specific embodiment 1 or 2. The opening angles of the V-shaped rough machining hob chip pocket 10 and the V-shaped finishing hob chip pocket 7 are both 14-16° , the formula for calculating the depth of the V-shaped rough machining hob chip pocket 10 and the depth of the V-shaped finishing hob chip pocket 7 is: Among them: H is the depth of 10 chip pockets of V-shaped rough machining hob or 7 depth of chip pocket of V-shaped finishing hob, h 0 is the full tooth height, k is the amount of shovel back, k 1 For the second shovel back, the V-shaped rough machining hob chip pocket and the V-shaped finishing hob chip pocket have the structural characteristics of large width and deep grooves, which can not only increase the inflow of compressed air, but also further improve the heat dissipation of cutting speed, and can expand the chip discharge channel, redu...

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Abstract

The invention discloses a roughing and finishing integrated hard alloy dry-cutting hob and belongs to the technical field of gear machining tools. The roughing and finishing integrated hard alloy dry-cutting hob comprises a hob body, a roughing hob set and a finishing hob set, wherein the center of the hob body is provided with a hob locating hole in the axial direction; the hob body, the roughinghob set and the finishing hob set are all made of hard alloy, the inner wall of the hob locating hole is provided with a key groove in key connection with a hobbing machine tool spindle, the roughinghob set and the finishing hob set are detachably and fixedly connected to the hob body respectively, multiple V-shaped roughing hob chip containing grooves are uniformly distributed in the outer circle surface of the roughing hob set, multiple V-shaped finishing hob chip containing grooves are uniformly distributed in the outer circle surface of the finishing hob set, a roughing front cutting edge and a roughing side cutting edge are arranged on the front surface of each roughing hob blade in the roughing hob set, and a finishing front cutting edge and a finishing side cutting edge are arranged on the front surface of each finishing hob blade in the finishing hob set. The hob is used for roughing and finishing of a gear.

Description

technical field [0001] The invention belongs to the technical field of gear processing tools, and in particular relates to a coarse-finish integrated hard alloy dry-cutting hob. Background technique [0002] With the rapid development of my country's economy, the technology of automobiles, aviation, machine tools and living equipment has been greatly improved, and the demand for gears is also increasing. Therefore, excellent gear processing technology is particularly important. Gear hobbing is a technology born after years of development of gears, and it is the current mainstream gear processing method. However, traditional wet cutting gear hobbing has gradually been unable to meet the current high-precision gears, high labor costs, and environmental protection requirements. business needs. Most of the current gear hobbing is dry hobbing, which is generally rough machining or semi-finishing. After hobbing, honing is still required to ensure that the gear accuracy meets the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F21/16
CPCB23F21/16
Inventor 吴明阳王新宇辛黎明张剑宇程耀楠
Owner HARBIN UNIV OF SCI & TECH
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