KR20150137685A - Apparutus for grinding inner diameter surface - Google Patents

Apparutus for grinding inner diameter surface Download PDF

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Publication number
KR20150137685A
KR20150137685A KR1020140065975A KR20140065975A KR20150137685A KR 20150137685 A KR20150137685 A KR 20150137685A KR 1020140065975 A KR1020140065975 A KR 1020140065975A KR 20140065975 A KR20140065975 A KR 20140065975A KR 20150137685 A KR20150137685 A KR 20150137685A
Authority
KR
South Korea
Prior art keywords
axis
polished
inner diameter
fixing
polishing
Prior art date
Application number
KR1020140065975A
Other languages
Korean (ko)
Inventor
백우인
Original Assignee
세계정밀 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 세계정밀 주식회사 filed Critical 세계정밀 주식회사
Priority to KR1020140065975A priority Critical patent/KR20150137685A/en
Publication of KR20150137685A publication Critical patent/KR20150137685A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/06—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/06—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally
    • B24B5/10—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally involving a horizontal tool spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/40—Single-purpose machines or devices for grinding tubes internally

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The present invention relates to an apparatus for grinding an inner diameter surface, wherein an inner diameter surface can be ground precisely and rapidly. The apparatus for grinding an inner diameter surface according to the present invention comprises: a supporting part (110) for supporting an object to be ground (A), of which an inner diameter is to be ground, in a direction parallel to the x-axis while moving in the y-axis; a rotation driving unit (120) installed on the supporting part to grant a rotating force around the x-axis to the object to be ground; a first fixing part (130) installed to be able to move in the x-axis and fixing one end of a grinding bar (B) for grinding the inner diameter of the object to be ground to be able to be attached and detached; and a second fixing part (140) installed to face the first fixing part (130) with the supporting part therebetween and fixing the other end of the grinding bar, which penetrates the object to be ground, to be able to be attached and detached.

Description

[0001] Apparutus for grinding inner diameter surface [0002]

The present invention relates to an inner surface polishing apparatus capable of accurately and rapidly polishing an inner surface.

In general, among tube-shaped molds, parts and products requiring precision on the inner diameter surface, the finishing process for precisely grinding the inner diameter surface must be performed to strictly manage the dimensions.

Conventionally, a method has been used in which an object to be polished is fixed to a die, and a polishing bar having an abrasive member such as sandpaper attached to the end thereof is inserted into the object to be polished, and then reciprocating back and forth while applying a constant pressure to the inner surface.

However, in the conventional polishing method which is performed manually, the working speed and the workability are extremely poor, and there is a problem that the precision varies greatly according to the skill of the operator. Recently, a method of rotating the polishing rod in the pipe A pipe inner diameter polishing machine in which the inner diameter face is polished to improve workability is mainly used.

However, such an inner diameter polishing machine has a problem that it is difficult to carry out accurate polishing because the contact pressure with the inner diameter surface of the object to be polished is lowered as the polishing rod goes deeper into the end (more deeply into the pipe) in the gravity direction.

Particularly, when the object to be polished is a metal mold, the inner diameter portion of the object to be polished is tapered in consideration of the disconnection of the molded product. However, with such a structure, it is not easy to polish the tapered inner diameter face with precision.

KR 20-0258105 Y1

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inner surface polishing apparatus capable of accurately and rapidly polishing an inner surface of a material to be polished.

In order to achieve the above object, an inner diameter surface polishing apparatus of the present invention comprises: a support portion for supporting an object to be polished whose inner diameter is to be polished so as to be movable in the y axis direction and side by side along the x axis; A first fixing part detachably fixed to one end of an abrasive rod for polishing the inside diameter of the object to be polished and provided so as to be able to move along the x axis and a first fixing part for detachably fixing one end of the polishing rod, And a second fixing part provided so as to face the fixing part and detachably fixing the other end of the polishing rod passing through the object to be polished.

The supporting unit includes a horizontal base, a conveying member installed to be movable along the y-axis on the horizontal base, a rotation member coupled to the upper portion of the conveying member so as to be rotatable about the z- Member.

In this case, the horizontal base may be provided with a feed screw for imparting a feed force to the feed member in the y-axis direction.

In the meantime, a guide hole formed along the rotation locus of the pivoting member is vertically passed through the pivoting member, a plurality of screw holes corresponding to the guide hole are formed in the conveying member, and the pivoting member passes through the guide hole, It is preferable to stably maintain the state of rotation through the tightening screw fastened to the screw hole.

According to the present invention configured as described above, the polishing is performed while both ends of the polishing rod are fixed to the first fixing portion and the second fixing portion, and the straightness of the polishing rod is precisely maintained during polishing, There is an effect that polishing can be performed precisely and quickly at all times.

Further, according to the present invention, since the supporting portion for supporting the object to be polished is rotated in accordance with the taper angle of the inner diameter surface of the object to be polished, even when the inner diameter portion of the object to be polished is tapered, the inner diameter face of the object to be polished can be always precisely and quickly polished.

1 is a perspective view of an inner surface polishing apparatus according to the present invention;
Fig. 2 is an exploded perspective view of a support constituting the present invention. Fig.
Fig. 3 is a view showing the state of use of the inner diameter surface polishing apparatus according to the present invention, in which the tilting angle of the tilting angle of the inner diameter portion of the object is rotated.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. The same reference numerals are used for the same components, and only the different portions are described for the sake of clarity.

As shown in Figs. 1 and 2, the inner diameter surface polishing apparatus 100 of the present invention has a support portion 110 for supporting an object A to be polished, the inner diameter of which is movable along the y-axis.

In addition, the support 110 supports the object A in a horizontal state so that the front and rear of the object A are parallel to the x-axis.

The supporting unit 110 includes a horizontal base 111 fixed to a floor surface, a conveying member 112 installed to move along the y axis on the horizontal base 111, And a tilting member 113 rotatably coupled to the upper portion of the tilting axis A about the z axis and on which the object to be polished A and the rotary drive unit 120 are mounted.

A protrusion 112a is formed in the z-axis direction on the upper portion of the conveying member 112 and a fitting hole 113a corresponding to the protrusion 112a is formed in the rotating member so that the protrusion 112a can be inserted into the rotary member. do. Therefore, the pivoting member 113 can rotate about the projection 112a at the upper portion of the conveying member 112. [

In addition, the conveying member 112 is installed so as to be conveyed in the y-axis direction. To this end, a feed screw 114 is installed in the horizontal base 111 so as to be idle in the y-axis direction toward the feed member 112, and a feed nut 115 Is fixed. Accordingly, when the feed screw 114 is rotated, the feed nut 115 moves in the y-axis direction along the feed screw 114 in accordance with the rotational direction of the feed screw 114.

The rotation driving unit 120 applies rotational force about the x axis to the object A to be supported on the supporting unit 110 so that the front and rear are parallel to the x axis. The rotation driving unit 120 includes a driving motor 121 mounted on the rotating member 113, a bearing member 122 fixed to the upper portion of the rotating panel, And a power transmission belt 124 for transmitting the rotational force of the drive motor 121 to the pulley 123. The pulley 123 is connected to the pulley 123, An object to be polished (A) is inserted and coupled to the inside of the pulley (123). Therefore, when the drive motor 121 operates, the object A is rotated.

A guide hole 116 formed along the rotation locus of the pivoting member 113 is vertically penetrated through the pivoting member 113 so as to stably maintain the pivoting state, A plurality of screw holes 117 are formed. Therefore, when the fastening screw 118 passes through the guide hole 116 and is completely fastened to the threaded hole 117 on one side, the tiltable member 113 is no longer rotated.

According to the present invention, the first fixing part 130 is provided movably along the x-axis. The first fixing part 130 detachably fixes one end of the polishing bar B for polishing the inner diameter of the object A to be polished.

The first fixing part 130 includes an x-axis conveying rail 131 installed on the bottom surface thereof, a bogie 132 moving back and forth along the conveying rail, and a collet chuck 133 installed on the bogie 132 do. The collet chuck 133 firmly fixes one end of the polishing rod B.

A second fixing part 140 is provided to face the first fixing part 130 with the support part 110 interposed therebetween. The second fixing part 140 detachably fixes the other end of the polishing rod B passing through the object A to be polished. The second fixing part 140 is provided with a collet chuck 141 capable of firmly fixing the other end of the polishing rod B, like the first fixing part 130.

Accordingly, the polishing bar B is fixed to the first fixing part 130 and the second fixing part 140 at both ends in a state of passing through the center of the object A, and is fixed parallel to the x axis. At this time, the center of the pulley 123 and the center of the chuck of the first fixing part 130 and the second fixing part 140 should be positioned in a straight line in the z-axis direction.

The inner surface polishing apparatus 100 constructed as described above is used as follows.

First, the object to be polished A is inserted into the pulley 123, and the first and the second fastening portions 130 and 140 are rotated in the state that the polish bar B is passed into the object A , The both ends of the polishing rod B are fixed.

When the object A and the object B are assembled, the position of the object A is set.

3, the pivoting member 113 is rotated around the projection 112a of the transferring member 112 so that the pivoting member 113 is at the same angle as the taper angle of the inside of the object A And the x-axis position of the object A is set so that the inside diameter of the object A to be tapered is parallel to the polishing rod B.

The tightening screw 118 is inserted into the guide hole 116 formed in the tiltable member 113 and the tightening screw 118 is fastened to the screw hole 117 formed in the conveying member 112 to cause the tiltable member 113 to flow (Not shown).

When the rotating member 113 is fixed to the transfer member 112, the transfer screw 114 is rotated in one direction so that the rotating member 113 and the polishing member B are rotated until the polishing rod B is brought into close contact with the inner diameter portion of the object A The conveying member 112 is moved in the y-axis direction to set the y-axis position of the object A to be processed. When the polishing rod B and the inner diameter portion of the object A are in close contact with each other, the feed screw 114 can no longer be rotated and the movement of the pivoting member 113 and the feed member 112 is also stopped.

When the x-axis position and the y-axis position of the object A are set as described above, the drive motor 121 is operated to rotate the object A in one direction. In this way, the polishing is performed by the polishing bar B closely attached to the inner diameter surface of the object A to be polished.

Then, the operator may gradually increase the polishing depth while rotating the feed screw 114 little by little so that the polishing is performed to the target depth. At this time, the operator rotates the feed screw 114 in consideration of the pitch of the feed screw 114, so that the feed distance in the y-axis direction of the object A can be precisely adjusted until the desired depth of abrasion is reached.

As described above, since the straightness of the polishing bar B is precisely maintained through the first fixing part 130 and the second fixing part 140 during polishing, irrespective of the skill of the operator, It is possible to always precisely and quickly polish the inner diameter surface of the wafer (A).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be takeners of ordinary skill in the art, And such variations are within the scope of the present invention.

110 ... support portion 111 ... horizontal base
112 ... conveying member 113 ... pivoting member
114 ... Feed screw 116 ... Guide ball
117 ... screw hole 118 ... pressure screw
120 ... rotation drive unit 130 ... first fixing portion
140 ... second fixing portion A ...
B ... Polishing rod

Claims (4)

A supporting part for supporting the object to be polished whose inner diameter is to be movable in the y-axis direction and parallel to the x-axis;
A rotation drive unit installed in the support unit for imparting rotational force about the x axis to the object to be polished;
a first fixing unit movably installed along the x axis and detachably fixing one end of an abrasive bar for abrading an inner diameter of the object to be polished; And
And a second fixing part facing the first fixing part with the support part interposed therebetween to detachably fix the other end of the polishing rod passing through the object to be polished. The method according to claim 1,
The support
Horizontal base;
A transporting member provided on the horizontal base so as to be movable along the y axis; And
And a tilting member coupled to the upper portion of the conveying member so as to be rotatable around a z-axis and on which the object to be polished and the rotary drive unit are mounted. The method according to claim 1,
Wherein the horizontal base is provided with a feed screw for imparting a feed force to the feed member in the y-axis direction. The method according to claim 1,
Wherein a guide hole formed along the rotation locus of the pivoting member is vertically passed through the pivoting member,
A plurality of screw holes corresponding to the guide holes are formed in the conveying member,
Wherein the tilting member passes through the guide hole and is stably held in a state rotated by a fastening screw fastened to one of the screw holes.
KR1020140065975A 2014-05-30 2014-05-30 Apparutus for grinding inner diameter surface KR20150137685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140065975A KR20150137685A (en) 2014-05-30 2014-05-30 Apparutus for grinding inner diameter surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140065975A KR20150137685A (en) 2014-05-30 2014-05-30 Apparutus for grinding inner diameter surface

Publications (1)

Publication Number Publication Date
KR20150137685A true KR20150137685A (en) 2015-12-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210133079A (en) 2020-04-28 2021-11-05 (주)경원정공 Machine for Internal Grinding of Pipe
CN113714907A (en) * 2021-09-28 2021-11-30 江苏老树宠物用品有限公司 Polishing machine for outer circle of wood pole
CN116673805A (en) * 2023-07-28 2023-09-01 盐城杰诺机械有限公司 Inner barrel grinding equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210133079A (en) 2020-04-28 2021-11-05 (주)경원정공 Machine for Internal Grinding of Pipe
CN113714907A (en) * 2021-09-28 2021-11-30 江苏老树宠物用品有限公司 Polishing machine for outer circle of wood pole
CN113714907B (en) * 2021-09-28 2022-12-16 江苏老树宠物用品有限公司 Polishing machine for outer circle of wood pole
CN116673805A (en) * 2023-07-28 2023-09-01 盐城杰诺机械有限公司 Inner barrel grinding equipment
CN116673805B (en) * 2023-07-28 2023-09-26 盐城杰诺机械有限公司 Inner barrel grinding equipment

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