Drill bit supporting device of drilling machine

A technology of supporting device and drilling machine, which is applied to tool joints, metal processing machinery parts, large fixed members, etc. The effect of reducing vibration amplitude and improving drilling accuracy

Inactive Publication Date: 2019-03-19
YANGZHOU BOST TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the drilling process of the 219 fire pipe machine four drilling machine, due to the large diameter of the pipe, the drilling vibration of the machine is large, the drill bit blade is easily damaged, and the drilling accuracy is reduced. The reason is that the upper and lower parts of the drilling machine spindle are equipped with dust-proof covers. Deep groove ball bearing, the disadvantage of this type of bearing is that the radial force is not ideal, and further improvement is needed

Method used

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  • Drill bit supporting device of drilling machine
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Embodiment Construction

[0017] Drilling machine drill bit support device, the drill bit 1 is connected to the output shaft 2, and the output shaft 2 is arranged in the support hole 3 where the output shaft 2 is installed; The tapered roller bearing 4 is provided with a sealing device in close contact with the tapered roller bearing 4 outside the tapered roller bearing 4, and the sealing device is located in the support hole 3.

[0018] The sealing device includes: an annular groove 21 arranged on the output shaft 2 , a sealing ring 5 sleeved on the annular groove 21 and matched with the annular groove 21 , and a sealing ring 5 outside the sealing ring 5 A rigid ring 6 that cooperates with the sealing ring 5 is formed, and the rigid ring 6 is arranged in the support hole 3 .

[0019] The sealing ring 5 has a certain degree of elasticity, and the rigid ring 6 is pressed against the sealing ring 5 , so that the rigid ring 6 and the sealing ring 5 are in close contact.

[0020] The inner surface of the ...

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Abstract

The invention relates to a drill bit supporting device of a drilling machine. A drill bit is connected to an output shaft, the output shaft is arranged in a supporting hole which is used for installing the output shaft, a tapered roller bearing which is used for supporting the output shaft is arranged in a supporting hole, a sealing device which is in close contact with the tapered roller bearingis arranged on the outer side of the tapered roller bearing, and the sealing device is located in the supporting hole. According to the device, a deep groove bearing arranged at the lower part of a main shaft is changed into the tapered roller bearing, the advantage is that an inner ring and an outer ring of the tapered roller bearing can be mounted separately, the radial play and axial play of the inner ring and the outer ring can be adjusted by adjusting the axial relative positions of the inner ring and the outer ring during installation and use, and the pre-interference assembly can also be implemented, but the defect of the tapered roller bearing is that when a machine works, the bearing rotates at a high speed, and lubricating grease on the bearing is easy to flow out, so that a groove is cut on a main shaft, and an oil leakage-proof sealing device, composed of an O-shaped rubber and a sealing steel ring which are matched with the groove, is arranged in the groove to overcome thedefect.

Description

technical field [0001] The invention relates to a drill bit supporting device of a drilling machine. The drilling machine of the invention is mainly used in the drilling operation of fire-fighting pipelines. Background technique [0002] During the drilling process of the 219 fire pipe machine four drilling machine, due to the large diameter of the pipe, the drilling vibration of the machine is large, the drill bit blade is easily damaged, and the drilling accuracy is reduced. The reason is that the upper and lower parts of the drilling machine spindle are equipped with dust-proof covers. Deep groove ball bearing, the disadvantage of this type of bearing is that the radial force is not ideal, and further improvement is needed. Contents of the invention [0003] In view of the above defects, the present invention aims to provide a drill support device for a drilling machine which has a reasonable structure and can maintain stable operation during the drilling process of the...

Claims

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Application Information

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IPC IPC(8): B23B51/12B23B19/02
CPCB23B51/12B23Q1/70
Inventor 陆春茂
Owner YANGZHOU BOST TOOLS
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