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A high-precision metal tube internal grinding device with an automatic pressure compensation device

An automatic compensation and high-precision technology, which is applied in metal processing equipment, abrasive surface adjustment devices, grinding machines, etc., can solve the problems of reducing work efficiency, adjustment and control, and poor work stability, so as to improve work efficiency and grinding accuracy , to ensure the effect of stability

Active Publication Date: 2017-10-24
HUANGSHI CHENGDA PRECISION MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing internal grinding device, the grinding wheel enters the inside of the pipe to grind the inner wall. After a period of time, the diameter of the grinding wheel will become smaller due to wear during the working process. As the depth of the grinding wheel entering the pipe increases further, the diameter of the grinding wheel will gradually shrink. Under the influence of the long axis, the adjustment and control of the grinding pressure of the grinding wheel cannot be realized, which makes the grinding effect not good
[0004] On the other hand, for pipes with larger inner diameters, currently only rigid long shafts can be used as transmission shafts to transfer the grinding pressure to the grinding wheel
In addition, for pipes with a long length (usually more than six meters), after the grinding wheel enters the inner cavity of the pipe for about two meters, it is difficult to effectively transmit the pressure of the rigid long axis to the grinding wheel, and the grinding wheel can only rely on the weight of the grinding wheel to realize the work. The pressure compensation of the reduced diameter of the grinding wheel leads to poor working stability during the grinding process, requiring multiple manual readjustments, which reduces work efficiency

Method used

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  • A high-precision metal tube internal grinding device with an automatic pressure compensation device
  • A high-precision metal tube internal grinding device with an automatic pressure compensation device
  • A high-precision metal tube internal grinding device with an automatic pressure compensation device

Examples

Experimental program
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Effect test

Embodiment 1

[0029] In this example, if figure 1 , a high-precision metal tube internal grinding device with an automatic pressure compensation device. It has a grinding wheel 1 with a thickness of 40mm (when the thickness of the grinding wheel 1 is less than 40mm, the grinding effect is poor), and the grinding wheel 1 is connected with a transmission through the grinding wheel shaft 2. Shaft 3, in order to ensure the stability of the transmission shaft 3 during rotation, the transmission shaft 3 and the motor output shaft 4 are connected through a flexible shaft connection sleeve 5 with a transmission flexible shaft 6, wherein the transmission flexible shaft 6 and the motor output shaft 4 A pin-key connection is adopted between them, and several flexible shaft sleeves 7 are set on the transmission flexible shaft 6, so that when the transmission flexible shaft 6 vibrates due to rotation, the flexible shaft sleeve 7 is fixed by external force to eliminate the transmission of the flexible sha...

Embodiment 2

[0034] In this example, if figure 2 , a grinding wheel 1, a drive shaft 3, a drive flexible shaft 6, a bearing 10, a support sleeve 8, a flexible shaft sleeve 7, and connections between various parts in a high-precision metal tube internal grinding device with an automatic pressure compensation device The structure is the same as in Example 1, wherein the thickness of the grinding wheel 1 is 60mm.

[0035]In this embodiment, an automatic compensation mechanism 11 for adjusting the grinding pressure of the grinding wheel 1 is installed on one side of the outer wall of the support shaft sleeve 8. Both sides of the wheel 12 are symmetrically provided with two connecting arms 13, and two guide rods 18 are installed on each connecting arm 13. The slider 19 that moves in three directions, the side of the slider 19 facing the grinding wheel 1 is hinged with a connecting rod A20, the bottom end of the connecting rod A20 is fixed and hinged on the support sleeve 8, and the slider 19 ...

Embodiment 3

[0039] In this example, if image 3 , a grinding wheel 1, a transmission shaft 3, a bearing 10, a transmission flexible shaft 6, a flexible shaft sleeve 7, and the connection structure between each part in a high-precision metal tube internal grinding device with an automatic pressure compensation device and embodiment 1 The same as above, wherein the thickness of the grinding wheel 1 is 80mm (when the thickness of the grinding wheel 1 is greater than 80mm, the working torque of the motor is difficult to drive the grinding wheel 1 to work normally).

[0040] In this embodiment, four cylinder bores 24 are symmetrically opened inside the supporting shaft sleeve 8 on both sides of the transmission shaft 3, and a cylinder head 25 is installed at the opening end of each cylinder bore 24, and a piston is sealed in the cylinder head 25. Rod 26, one end of the piston rod 26 located in the cylinder bore 24 is equipped with a guide sealing piston 27, and the other end of the piston rod ...

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Abstract

The invention relates to the field of metal pipe machining equipment, in particular to a high-precision metal pipe internal grinding device with a pressure automatic compensation device. The device is provided with a grinding wheel, and the grinding wheel is connected with a transmission shaft through a grinding wheel shaft; the transmission shaft is connected with an output motor through a transmission flexible shaft, and the transmission flexible shaft is sleeved with a plurality of flexible shaft casing pipes for stabilizing shaking of the transmission flexible pipe; the transmission shaft is sleeved with a supporting shaft sleeve through a bearing; the automatic compensation mechanism used for stabilizing grinding pressure of the grinding wheel is mounted on the outer wall of the supporting shaft sleeve; and the high-precision metal pipe internal grinding device ensures the stability of the grinding process of the inner wall of a pipe, the working efficiency is improved, flexibility of the grinding work is enhanced, and the good application prospect is achieved.

Description

technical field [0001] The invention relates to the field of metal pipe processing equipment, in particular to a high-precision metal pipe internal grinding device with an automatic pressure compensation device. Background technique [0002] In the equipment for internal grinding of seamless steel pipes in the metallurgical industry, a long shaft driven by a motor is commonly used, and the long shaft drives the grinding wheel to rotate and extend into the inner wall of the pipe, and the long shaft moves along the axial direction of the pipe to achieve grinding of the inner wall of the pipe. [0003] In the existing internal grinding device, the grinding wheel enters the inside of the pipe to grind the inner wall. After a period of time, the diameter of the grinding wheel will become smaller due to wear during the working process. As the depth of the grinding wheel entering the pipe increases further, the diameter of the grinding wheel will gradually shrink. Under the influen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B5/40B24B5/35B24B53/017
CPCB24B5/35B24B5/40B24B53/017
Inventor 文武余子扬罗祖瑞兰义平罗嘉青徐华新易学愚
Owner HUANGSHI CHENGDA PRECISION MACHINERY MFG