KR102563253B1 - Inner diameter grinding device for horizontal state maintenance structure of guide tube body - Google Patents

Abstract

The present invention relates to an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body, which can effectively polish the inner diameter of a tube and also can wash abrasives and foreign substances, thereby improving workability and easy maintenance. It includes a shelf body having a transfer rail thereon, a polishing unit moving along the transfer rail of the shelf body and polishing the inner diameter of the tube, and a transfer unit moving the polishing unit, wherein the polishing unit comprises the shelf body. A housing body that moves along the transfer rail of the body; A pair of guide tubes, one end of which is fitted and fixed to the housing body; a rotary shaft having an end disposed inside the housing body and a front end passing through the guide tube body and disposed outside; a polishing head provided at the front end of the rotating shaft and polishing the inner diameter of the tube; and a drive motor provided on the housing body to rotate the rotating shaft, and the shelf body detects deflection of the moving guide tube body and pressurizes the guide tube body to maintain a horizontal state. The technical point is that a return means is further provided.

Description

Inner diameter grinding device for horizontal state maintenance structure of guide tube body}

The present invention relates to an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body, and more particularly, to improve workability by effectively polishing the inner diameter of a tube and cleaning abrasives and foreign substances. It relates to an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body that is easy to maintain and maintain.

In general, stainless steel metal tubes are manufactured by using a band-shaped stainless steel plate having a certain width as a material, rolling the plate in stages to form a circle, and joining the seam where both ends meet by argon welding.

As described above, the metal pipe manufactured by welding is formed with welding beads protruding on the inner and outer surfaces of the welded portion, and the weld beads formed on the inner and outer surfaces of the metal pipe are cut or compressed using a bead removal device. It can be removed by processing method, and the outer surface of the metal pipe can be polished cleanly and polished using the existing outer diameter polishing device, but the inner surface of the metal pipe cannot be polished using the existing outer diameter polishing device.

Conventionally, in a state where a grinding stone or polishing cloth is inserted into the inside of a metal tube, the inner diameter is polished by rotating it in one direction and reciprocating back and forth at the same time.

However, since the conventional polishing device for polishing the inner diameter of a pipe is bent by its own weight in the process of moving to insert the rotating shaft into the pipe, the inner diameter of the pipe is unevenly polished, making it difficult to uniformly polish the surface. In addition, there is a cumbersome problem of separately cleaning abrasives and foreign substances generated in the polishing process after polishing, and due to this, the problem of delaying the process and lowering productivity remains.

The foregoing invention refers to the background art in the technical field to which the present invention belongs, and does not mean the prior art.

Registered Patent No. 0698019

The present invention has been made to solve the above conventional problems, and an object of the present invention is to effectively polish the inner diameter of the tube and to clean abrasives and foreign substances, thereby improving workability and maintenance Its purpose is to provide an inner diameter polishing device for a tube having a structure for easily maintaining a horizontal state of a guide tube body.

The present invention is for polishing the inner diameter of a tube, a shelf body provided with a transfer rail thereon, a polishing unit that moves along the transfer rail of the shelf body and polishes the inner diameter of the tube, and a transfer unit that moves the polishing unit. In the internal diameter polishing device for a tube comprising: a housing body moving along the transfer rail of the shelf body; A pair of guide tubes, one end of which is fitted and fixed to the housing body; a rotary shaft having an end disposed inside the housing body and a front end passing through the guide tube body and disposed outside; a polishing head provided at the front end of the rotating shaft and polishing the inner diameter of the tube; and a driving motor provided on the housing body to rotate the rotary shaft, and when the deflection of the moving guide tube body occurs in the shelf body, the deflection is sensed and the guide tube body is pressurized to maintain a horizontal state. It can be achieved by an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body, characterized in that a sensing type return means is further provided.

Preferably, the shelf body is further provided with a deflection prevention guide means to prevent the guide tube body from sagging during movement and to support it during movement, and the deflection prevention guide unit is hollow so as to be inserted into the guide tube body. It is characterized in that it consists of guide units formed with guide holes, moving along the guide rail of the shelf body and supporting the guide tube body, and a stopper member formed at one end of the shelf body and holding the guide unit. .

Preferably, the guide hole is characterized in that a replacement type close-fitting tube is further fastened so as to be in close contact with the guide tube body.

Preferably, the polishing unit is further provided with an abrasive removal means to remove foreign substances such as abrasive or fine powder generated in the process of polishing the inner diameter of the tube, and the abrasive removal means is fitted to the rotating shaft of the polishing unit. A rotating tube body rotated together with the rotating shaft, an elastic buffer tube body fitted while surrounding the rotating tube body fastened to the rotating shaft, and an elastic buffer tube body configured to absorb shock by elasticity, and inserted while wrapping the elastic buffer tube body. , It is made of a washing tube body that rubs against the inner diameter of the tube to remove abrasives and foreign substances, the outer diameter of the washing tube body is formed larger than the inner diameter of the tube, and the outer diameter of the elastic buffer tube body is further formed with locking protrusions, A locking groove is further formed on the inner diameter of the washing tube body so as to be fitted into the locking protrusion to prevent idling due to friction with the tube.

Preferably, the polishing unit is further provided with an oil spraying unit to remove foreign substances such as abrasives or fine powder generated during the polishing process and adhering to the inner diameter of the tube and to reduce friction between the tube and the washing tube body. The oil injection unit includes an oil injection nozzle formed on the guide tube body to inject oil into the inner diameter of the tube, an oil supply pump provided on the housing body to supply oil to the oil injection nozzle, and the oil injection nozzle. It is characterized in that it consists of a supply line connecting the injection nozzle and the oil supply pump to deliver oil.

Preferably, the deflection-sensing return means includes a horizontal bracket whose lower part is connected to and fixed to the upper surface of the shelf body, and whose lower part is connected to and fixed to the horizontal bracket, and pressurizes and returns the guide tube body that sags while moving. An elevating cylinder, a support panel having one end connected to and fixed to an end of the pressing shaft of the elevating cylinder, and an elastic pressing block attached to one surface of the support panel and pressing the guide tube body by driving the elevating cylinder. , a seating groove formed on one surface of the elastic pressing block to allow a portion of the guide tube body to be inserted, a deflection detection sensor provided on the shelf body and detecting a deflection state of the guide tube body being moved, and provided on the shelf body and a control unit for controlling and driving the lift cylinder by receiving a signal from the deflection detection sensor, so that the lift cylinder is driven by the signal of the deflection detection sensor to maintain a horizontal state of the sagging guide body. It is characterized in that when the guide tube body is drawn into the tube in a sagging state, the guide tube body is prevented from being caught or rubbed on the inner surface of the tube.

The inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube according to the present invention effectively polishes the inner diameter of a tube and can clean abrasives and foreign substances, thereby improving workability and facilitating maintenance. there is.

1 is a front view showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
2 is a side view showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
Figure 3 is a front view showing a state in which the deflection prevention guide means of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention is installed.
4 is an operating state diagram showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
5 is a front view showing a state in which an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention is installed.
6 is a view showing a tube supply device in the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
Figure 7 is a partially enlarged cross-sectional view showing another embodiment of the deflection prevention guide means in the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
8 is a view showing another embodiment of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.
Figure 9 is a view showing another embodiment of the inner diameter polishing device for the tube having a structure for maintaining the horizontal state of the guide tube body according to the present invention.
10 is a view showing another embodiment of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.

Since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea.

On the other hand, the meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Expressions in the singular number should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to an embodied feature, number, step, operation, component, part, or these. It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In each step, the identification code (eg, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step clearly follows a specific order in context. Unless otherwise specified, it may occur in a different order than specified. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

1 is a front view showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. 2 is a side view showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. Figure 3 is a front view showing a state in which the deflection prevention guide means of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention is installed. 4 is an operating state diagram showing an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. 5 is a front view showing a state in which an inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention is installed. 6 is a view showing a tube supply device in the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. Figure 7 is a partially enlarged cross-sectional view showing another embodiment of the deflection prevention guide means in the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. 8 is a view showing another embodiment of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention. Figure 9 is a view showing another embodiment of the inner diameter polishing device for the tube having a structure for maintaining the horizontal state of the guide tube body according to the present invention. 10 is a view showing another embodiment of the inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body according to the present invention.

As shown in the drawing, the inner diameter grinding device 10 for a tube having a horizontal state maintenance structure of the guide tube body of the present invention (hereinafter referred to as an inner diameter grinding device for convenience of description) is a tube 300 formed of a long tube structure. As a polishing device for polishing the inner diameter, the inner diameter polishing device 10 includes a lathe body 20, a polishing unit 30, and a transfer unit 40.

The shelf body 20 is provided with a pair of transfer rails 21 in a groove structure at the top.

A guide groove is formed in the center of the upper surface of the shelf body 20 along the longitudinal direction, and the lower part of the polishing part 30 is disposed and guided in the guide groove.

The shelf body 20 may be fixed by fastening a lower portion to the anchor bolt after installing anchor bolts on the ground to improve fixing force.

The polishing unit 30 moves along the transfer rail 21 of the shelf body 20 and polishes the inner diameter of the tube 300 .

The polishing part 30 includes a housing body 31 having rail protrusions formed on the bottom surface so as to move along the transfer rail 21 of the shelf body 20 and a through hole formed in the front panel of the housing body 31. A pair of guide tube bodies 32 that are fixed by welding or screwing after one end is connected to the other, and ends are disposed inside the housing body 31, and the front end penetrates the guide tube body 32 to the outside A rotary shaft 33 disposed on, a polishing head 34 provided at the front end of the rotary shaft 33 and polishing the inner diameter of the tube 300, and provided on the housing body 31, the rotary shaft ( 33) is composed of a driving motor 35 that rotates.

The polishing head 34 is a grinding stone, and any material may be used as long as it is made of a material capable of polishing metal or aluminum by friction. The polishing head 34 has a hollow structure, is inserted into the front end of the rotating shaft 33, and then is screwed or attached to be fixed.

A gear is formed at the end of the rotating shaft 33 disposed inside the housing body 31, and an interlocking gear is formed at the rotating shaft of the driving motor 35 to mesh with the gear, so that the driving motor 35 The rotational shafts 33 are rotated by the driving of ).

Alternatively, it is also possible to rotate by connecting the rotating shaft of the drive motor 35 and the end of the rotating shaft 33 with a belt.

Ring bearings are inserted inside the guide tube body 32 at regular intervals, and the rotation shaft 33 is inserted through the ring bearings to guide the rotating rotation shaft 33. By doing so, the rotating shaft 33 and the guide tube body 32 are prevented from rubbing.

The transfer part 40 moves the polishing part 30 .

The transfer unit 40 has one end screwed and fixed to the transfer motor 41 formed on the shelf body 20 and the transfer shaft of the transfer motor 41, and the other end formed on the shelf body 20. It consists of a guide screw 42 that is inserted into a guide bearing to be rotated.

The housing main body 31 has a hollow guide hole having a screw groove formed on an inner surface thereof to be inserted into the guide screw 42 and to move along the guide screw 42 by rotation of the guide screw 42. formed and moved along the guide screw 42 by the rotational direction of the guide screw 42 , which is idling.

As the polishing part 30 is moved by the driving of the transfer motor 41, the driving motor 35 of the polishing part 30 is driven, and the polishing head 34 and the rotating shaft 33 While rotating, it is inserted into the tube 300 to be processed, and the inner surface of the tube 300 is polished. At this time, the guide pipe body 32 is also inserted into the tube 300 together with the rotating shaft 33 .

The tube 300 is disposed on a tube shelf 200 disposed close to one end of the shelf body 20, and the tube 300 supplied from the tube supply device 100 is disposed on the tube shelf 200. do.

The shelf body 20 is disposed on both sides of the tube shelf 200 so that the rotary shaft 33 is drawn in and polished on both sides of the tube 300 disposed on the tube shelf 200, thereby improving polishing efficiency. It is also possible to increase the and shorten the polishing time of the tube 300.

A deflection prevention guide means 50 is further provided on the shelf body 20 to prevent the guide tube body 32 from sagging during movement and to support it during movement.

The deflection prevention guide means 50 has hollow guide holes 511 formed so as to be inserted through the guide tube body 32 and a pair of guide rails 22 formed on the upper surface of the shelf body 20. It is composed of guide units 51 moving along and supporting the guide tube body 32, and a stopper member 52 formed at one end of the shelf body 20 and holding the guide unit 51.

That is, by friction between the guide hole 511 and the guide tube body 32, the guide units 51 move while being guided along the guide tube body 32 along the guide rail 22, and the guide tube body ( 32) is prevented from drooping, and the guide unit 51 moved to the front end of the shelf body 20 is caught and fixed by the stopper member 52, and the guide tube body 32 moves through the guide hole It is guided through 511 and introduced into the tube 300. Other guide units 51 are sequentially caught and fixed to the guide unit 51 caught by the stopper member 52 .

A hollow replaceable close fitting tube 53 is further fastened to the guide hole 511 so as to be in close contact with the guide tube body 32 .

The replaceable close fitting tube 53 is made of synthetic resin material, and can be separated from the guide hole 511 and replaced when the adhesion to the guide tube body 32 is reduced or wear due to friction with the guide tube body 32 occurs. let it be

After being inserted into the guide hole 511, the replaceable close fitting tube 53 is fixed by screwing or bonding.

An abrasive removal unit 60 is further provided in the polishing unit 30 to remove foreign substances such as abrasive or fine powder generated in the process of polishing the inner diameter of the tube 300 .

The abrasive removal means 60 includes a rotating tube body 61 that is screwed after being inserted into the rotating shaft 33 of the polishing part 30 and rotates together with the rotating shaft 33, and the rotating shaft 33 An elastic buffer tube 62 made of a synthetic resin material having elasticity so as to be fitted and adhesively fixed while wrapping the rotary tube body 61 fastened thereto, and to buffer shock by elasticity, and the elastic buffer tube 62 The washing tube body 63 is inserted while wrapping and rubs against the inner diameter of the tube 300 to remove abrasives and foreign substances formed while the polishing head 34 polishes the tube 300, and the cleaning tube body 63 The outer diameter of ) is formed to be larger than the inner diameter of the tube 300, and locking protrusions 621 are further formed on the outer diameter of the elastic buffer tube 62, and the locking protrusions 621 are formed on the inner diameter of the washing tube body 63 ( A locking groove 631 is further formed so as to be fitted into the tube 621 to prevent idling due to friction with the tube 300.

The washing pipe body 63 is made of a synthetic fiber material or a natural fiber material, and is force-fitted and fixed to the elastic buffer pipe body 62 .

The elasticity of the elastic buffer tube body 62 allows the washing tube body 63 to be force-fitted into the tube 300, and the washing tube body 63 presses the inner surface of the tube 300 due to the elasticity. Thus, the cleaning power can be increased and the impact can be buffered.

It is preferable to further form annular inlet grooves along the outer surface of the washing pipe body 63 so that the abrasive or foreign substances are introduced into the inlet grooves and then attached and fixed to increase the cleaning efficiency.

The polishing part 30 removes foreign substances such as abrasives or fine powder generated during the polishing process and adheres to the inner diameter of the tube 300, and also reduces friction between the tube 300 and the washing tube body 63. An oil injection unit 70 is further provided to reduce it.

The oil injection unit 70 is formed on the guide tube body 32 to supply oil to the oil injection nozzle 71 configured to inject oil into the inner diameter of the tube 300 and the oil injection nozzle 71 It consists of an oil supply pump 72 provided on the housing body 31 and a supply line 73 connecting the oil injection nozzle 71 and the oil supply pump 72 to deliver oil.

The supply line 73 has a tubular structure and is pipe-connected to the oil injection nozzle 71 and the oil supply pump to supply oil.

The oil sprayed on the inner surface of the tube 300 through the oil spray nozzle 71 increases the cleaning efficiency of the abrasive and foreign substances. At this time, it is also possible to replace the oil and supply water to spray.

At this time, the oil spraying unit 70 removes and separates the rotary shaft 33 and the guide tube body 32 from the tube 300 after polishing, and the oil and oil sprayed by the washing tube body 63 are separated. The abrasives and foreign substances contained in are discharged while wiping, and in the process of removing the guide tube body 32 and the rotating shaft 33 from the tube 300, the rotating tube body 61 can be removed while rotating, and the non-rotated The oil can be removed by removing it from the state.

That is, oil is sprayed in the process of separating the rotating shaft 33 and the guide tube body 32 from the tube 300 .

A ventilation hole is further formed in the guide tube body 32, and a blowing fan is further fastened to the ventilation hole so that the wind of the blowing fan is transmitted to the inner surface of the tube 300 where the oil is sprayed, thereby reducing wind pressure. It is desirable to ensure that the oil is applied uniformly by

The shelf body 20 is further provided with a deflection-sensing return unit 80 configured to detect deflection of the moving guide tube body 32 and pressurize the guide tube body 32 to maintain a horizontal state. .

The deflection detection type return means 80 includes a horizontal bracket 81 whose lower part is connected to and fixed to the upper surface of the shelf body, and a lower part screwed to and fixed to the horizontal bracket 81, and the guide tube body drooping while moving. An elevating cylinder 82 configured to press and return, a support panel 83 having one end attached to and fixed to the end of the pressing shaft of the elevating cylinder 82, and attached to one surface of the support panel 83, An elastic pressure block 84 made of a synthetic resin material having elasticity that presses the guide tube body 32 by the driving of the elevating cylinder 82, and formed on one surface of the elastic pressure block 84, the guide tube body A seating groove 85 for allowing a portion of the to be inserted, a deflection detection sensor 86 provided on the shelf body 20 and detecting a deflection state of the moving guide tube body, provided on the shelf body 20 and It consists of a control unit 87 that receives a signal from the deflection sensor 86 and controls and drives the lift cylinder, and the guide tube body deflects when the lift cylinder 82 is driven by the signal from the deflection sensor 86. By maintaining the horizontal state of (32), when the guide tube body 32 is drawn into the tube 300 in a drooping state, the guide tube body 32 is prevented from being caught or rubbed on the inner surface of the tube.

Although the present invention has been described in detail so far, it is clear that the embodiments mentioned in the process are only illustrative and not limiting, and the present invention is the technical spirit or field of the present invention provided by the claims below. Within the range that does not deviate from, it will be said that component changes to the extent that can be equally coped with fall within the scope of the present invention.

10: internal polishing device
20: shelf body
21: transfer rail
22: guide rail
30: polishing part
31: housing body
32: guide pipe body
33: rotating shaft
34: polishing head
35: driving motor
40: transfer unit
41: transfer motor
42: guide screw
50: deflection prevention guide means
51: guide unit
511: guide
52: stopper member
53: replaceable close fitting pipe
60: abrasive removal means
61: rotating tube
62: elastic buffer tube
621: stumbling block
63: washing pipe body
631: catch groove
70: oil injection unit
71: oil injection nozzle
72: oil supply pump
73: supply line
80: sagging detection type return means
81: horizontal bracket
82: lift cylinder
83: support panel
84: elastic pressure block
85: seating groove
86: sagging sensor
87: control unit
100: tube supply device
200: tube shelf
300: tube

Claims (6)

For polishing the inner diameter of the tube, comprising a shelf body having a transfer rail thereon, a polishing unit moving along the transfer rail of the shelf body and polishing the inner diameter of the tube, and a transfer unit moving the polishing unit In the inner diameter polishing device for tubes,
The polishing part,
a housing body moving along the transfer rail of the shelf body;
A pair of guide tubes, one end of which is fitted and fixed to the housing body;
a rotary shaft having an end disposed inside the housing body and a front end passing through the guide tube body and disposed outside;
a polishing head provided at the front end of the rotating shaft and polishing the inner diameter of the tube;
a driving motor provided on the housing body to rotate the rotating shaft; and
An abrasive removal means to remove foreign substances such as abrasives or fine powder generated in the process of polishing the inner diameter of the tube;
The abrasive removal means,
A rotating tube body fitted to the rotating shaft of the polishing unit and rotated together with the rotating shaft;
An elastic buffering tube that is inserted while surrounding the rotating tube connected to the rotating shaft and absorbs an impact by elasticity;
It is fitted while surrounding the elastic buffer tube and is made of a cleaning tube body that rubs against the inner diameter of the tube to remove abrasives and foreign substances,
The outer diameter of the washing tube body is formed to be larger than the inner diameter of the tube,
Locking protrusions are further formed on the outer diameter of the elastic buffer tube, and locking grooves are further formed on the inner diameter of the washing pipe body to be fitted into the locking protrusions to prevent idle rotation by friction with the tube,
The shelf body has a structure for maintaining a horizontal state of the guide tube body, characterized in that a deflection sensing type return means is further provided to detect the deflection of the moving guide tube body and pressurize the guide tube body to maintain a horizontal state. Internal diameter polishing device for tubes with According to claim 1,
The shelf body is further provided with a deflection prevention guide means to prevent the guide tube body from sagging during movement and to support it during movement,
The sagging prevention guide means,
Hollow guide holes are formed so as to be inserted through the guide tube body,
Guide units moving along the guide rail of the shelf body and supporting the guide tube body;
An inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body, characterized in that it is formed at one end of the shelf body and is made of a stopper member on which the guide unit is caught. According to claim 2,
The inner diameter polishing device for the tube having a structure for maintaining the horizontal state of the guide tube body, characterized in that the guide hole is further fastened to the replacement type close-fitting tube so as to be in close contact with the guide tube body. delete According to claim 1,
The polishing unit is further provided with an oil spraying unit to remove foreign substances such as abrasives or fine powder generated during the polishing process and adhering to the inner diameter of the tube and to reduce friction between the tube and the washing tube body,
The oil injection part,
An oil injection nozzle formed in the guide tube body to inject oil into the inner diameter of the tube;
An oil supply pump provided on the housing body to supply oil to the oil injection nozzle;
An inner diameter polishing device for a tube having a structure for maintaining a horizontal state of a guide tube body, characterized in that it consists of a supply line for transferring oil by connecting the oil injection nozzle and the oil supply pump. According to claim 1,
The sagging sensing type return means,
A horizontal bracket whose lower part is connected to and fixed to the upper surface of the shelf body;
An elevating cylinder having a lower end connected to and fixed to the horizontal bracket, and configured to pressurize and return the guide tube body that sags while moving;
A support panel having one end connected to and fixed to an end of the pressing shaft of the lifting cylinder;
An elastic pressure block attached to one surface of the support panel and pressurizing the guide tube by driving the elevating cylinder;
A seating groove formed on one surface of the elastic pressing block and allowing a portion of the guide tube body to be retracted;
A deflection detection sensor provided on the shelf body and detecting a deflection state of the moving guide tube;
It consists of a control unit provided on the shelf body and receiving a signal from the deflection detection sensor to control and drive the lifting cylinder.
The elevating cylinder is driven by the signal of the deflection detection sensor to keep the sagging guide tube body in a horizontal state, so that when the guide tube body is drawn into the tube in a sagging state, the guide tube body is caught on the inner surface of the tube or Internal diameter polishing device for a tube having a structure for maintaining a horizontal state of the guide tube body, characterized in that to prevent friction.