Inner-cooling type hobbing cutter

A hob, cold type technology, applied in the direction of milling cutter, gear tooth manufacturing device, gear teeth, etc.

Active Publication Date: 2015-05-06
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an internally cooled hob to solve the problem of pouring wet cutting hobbing oil / fluid The problem of poor compressed air injection and increased processing costs; and the dry hobbing hob has severe friction, affected wear resistance, and affects the service life of the hob, etc.

Method used

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  • Inner-cooling type hobbing cutter

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] As shown in Figure 1, an internally cooled hob includes a cutter bar 6 and a hob 4, and the hob 4 is sleeved on the cutter bar 6; the hob 4 is connected by a key 13 to fix its axial rotation degree of freedom. The washers 3 and 5 fix the degree of freedom of axial movement, and the other four degrees of freedom are restricted by the cutter rod 6, so as to be fixed on the cutter rod 6; the hob head seat 2 plays the role of supporting the cutter rod 6, and also through the thread Connect with rotary joint 1.

[0024] See Figure 1 and figure 2 , the present invention is based on the existing hob structure, the hob 4 is located in the chip pocket corresponding to the rake face of the cutter tooth and is provided with an oil hole 7; the upper part of the oil hole 7 is correspondingly provided with a hole plug 9, and the lower part...

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Abstract

The invention provides an inner-cooling type hobbing cutter which comprises a cutter rod and a hobbing cutter body. An oil hole channel is arranged in a chip containing groove, corresponding to front cutter faces of cutter teeth, of the hobbing cutter body. A hole plug is correspondingly arranged on the upper portion of the oil hole channel, and the lower portion of the oil hole channel is communicated with a cutter retreating groove of the hobbing cutter body. The whole plug with an jet hole in the head portion is connected with the oil hole channel through threads. A cutter rod axial oil hole and cutter rod radial oil holes communicated with the cutter rod axial oil hole are formed in the cutter rod. The cutter rod axial oil hole is communicated with a center hole of a connector stator through a center hole of a connector rotor. The oil hole channel in the hobbing cutter body and the hole plug for opening and closing the hole channel are adopted, cutting oil / liquid and compressed air are directly jetted on the front cutter faces of the cutter teeth of the hobbing cutter body through the oil hole channel, the cooling and lubricating function is fully achieved, the temperature of the hobbing cutter is reduced, the service life of the hobbing cutter is prolonged, the hobbing cutter can direct jet cooling media nearby a cutting area, cutting heat is taken away to the greatest extent, and the influence of the cutting heat on hobbing machining is reduced.

Description

technical field [0001] The invention belongs to the field of metal cutting tools, and relates to a gear hob, in particular to an internal cooling hob suitable for gear hobbing. technical background [0002] As a mechanical component that transmits motion and power, gears are key basic transmission components in industries such as automobiles, ships, aerospace, metallurgy, and wind power. The gear hobbing process is one of the most widely used gear processing processes at present. It has the characteristics of high production efficiency and belongs to a large-volume and wide-ranging mechanical processing process. The gear hobbing process is different from cutting processes such as turning. During the intermittent cutting process of the hob, its teeth are subjected to thermal shock loads due to severe extrusion and friction with chips and workpieces. This thermal shock load aggravates the hob The wear and tear shortens the service life of the hob. As one of the basic tools...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F21/16B23C5/28
Inventor 曹华军杨潇戴新
Owner CHONGQING UNIV
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