KR101985684B1 - apparatus for honing tool - Google Patents

Abstract

As the honing tool is eccentrically and positively deflected during the honing process of the workpiece, the honing member is automatically honed along the center of the work hole of the workpiece, so that the honing of the workpiece can be performed. In order to improve the durability, the present invention is characterized in that a base mounting portion is provided with a ball insertion hole formed in an axial direction so that a rear end thereof is coupled with a driving means for providing a rotational force and a reciprocating movement force, A cover portion having a mounting hole formed in an axial direction so that both ends thereof are opened and a mounting space formed therein, and a front end portion of the base mounting portion is inserted and coupled to a rear end portion; A honing attaching portion having an extending support portion extending from the mounting end portion provided at the rear end portion to the rear side and being inserted into the mounting space through the front end portion of the cover portion and having a honing member for honing the workpiece at the front end portion; A ball corresponding to the angle corresponding to the ball insertion hole, which is disposed at the entrance side of the ball insertion hole and is elastically restored from the elastic member, And a multi-dimensional rotary support unit disposed inside the mounting space such that the extended support unit passes through a center portion of the mounting space to enable eccentric rotation and angular movement of the honing mount unit, thereby providing a honing tool for a machine tool .

Description

An apparatus for honing tool for a machine tool

The present invention relates to a honing tool apparatus for a machine tool, and more particularly, to a honing tool apparatus for honing a workpiece, wherein the honing tool is automatically honed at a machining hole position of a workpiece, The present invention relates to a honing tool for a machine tool, which is capable of performing honing of a defective workpiece, thereby improving cutting quality and preventing breakage of the honing member, thereby improving durability.

In general, honing is one of the processing methods for finishing the inner circumferential surface of the workpiece. Through the honing process, a special machining process called a cross hatch is formed on the inner circumferential surface of a work such as an engine cylinder.

This honing process, such as a cross hatch, can stably form the lubricant film on the inner circumferential surface of the cylinder, preventing excessive wear of the piston and allowing smooth flow.

At this time, the honing tool for the honing process is provided in a polygonal shape, and a stone holder in which a honing stone is mounted on the end is provided.

The inner circumference of the cylinder can be honed as the honing tool is rotated and moved up and down in a state where the inner circumference of the honing stone is in contact with the inner circumference of the cylinder.

Here, the honing tool is connected to the spindle of the spindle and rotated, and the spindle head can be reciprocated up and down as vertically moved in the vertical frame provided on the side of the workpiece.

The workpiece such as an engine cylinder is made of a metal material, and the honing stone is subjected to cutting and cutting in a rotating and reciprocating motion while strongly pressing the inner circumference of the cylinder. Here, a conventional honing tool is provided to be connected to the spindle so as to enable eccentric rotation during honing of the workpiece to provide vibration to the workpiece.

However, the conventional honing tool has a problem that when the eccentric rotation is performed, the connection portion connected to the spindle and the housing covering the connection portion are damaged. Further, when the inner circumferential surface of the workpiece is not horizontally formed so as to correspond to the axial direction, there is a problem that the honing grindstone is easily worn or damaged.

Korean Patent Publication No. 10-1995-0008046

In order to solve the above-mentioned problems, the present invention provides a method for honing a workpiece in which a honing member is automatically honed at a machining hole position of a workpiece in accordance with eccentricity and declination of the honing tool during honing of the workpiece, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a honing tool device for a machine tool having improved durability by preventing breakage of the honing member.

In order to solve the above-described problems, the present invention provides a base mounting structure, comprising: a base mounting portion having a rear end portion coupled to a driving means for providing a rotational force and a reciprocating motive force and having a ball insertion hole formed therein in an axial direction so as to insert and fix an elastic member therein; A cover portion having a mounting hole formed in an axial direction so that both ends thereof are opened and a mounting space formed therein, and a front end portion of the base mounting portion is inserted and coupled to a rear end portion; A honing attaching portion having an extending support portion extending from the mounting end portion provided at the rear end portion to the rear side and being inserted into the mounting space through the front end portion of the cover portion and having a honing member for honing the workpiece at the front end portion; A ball corresponding to the angle corresponding to the ball insertion hole, which is disposed at the entrance side of the ball insertion hole and is elastically restored from the elastic member, And a multi-dimensional rotary support unit disposed inside the mounting space such that the extended support unit passes through a center portion of the mounting space to enable eccentric rotation and angular movement of the honing mount unit, thereby providing a honing tool for a machine tool .

Here, a round contact groove is formed at an end portion of the extended support portion facing the corresponding angle-corresponding ball portion so that the inner diameter becomes narrower toward the front side of the extended support portion and the entire inclined surface is inclined toward the center portion. And is elastically adhered to the rim of the round contact groove.

In this case, the mounting end and the multi-dimensional rotary support unit are provided to have a diameter smaller than a diameter of the mounting hole so that a vertical clearance space is formed in the mounting space, and the extended supporting portion is formed such that a horizontal clearance space is formed inside the mounting space And is formed to be thicker than the axial thickness of the multi-dimensional rotation supporting part.

The mounting portion has a stepped portion protruding radially outwardly. The mounting portion has a stepped portion protruding radially outwardly from the mounting portion, And a friction reducing portion disposed between the mounting fixing portion and the step portion and having a plurality of ball bearings spaced apart in the circumferential direction.

The support rollers are disposed at the front end and the rear end of the multi-dimensional rotation support unit so as to cross each other along the circumferential direction of the multi-dimensional rotation support unit. The support roller unit is disposed to correspond to the axial direction of the honing attachment unit An eccentric support roller which is spaced apart from the eccentric support roller and selectively rotates in contact with the rim of the mounting space when the eccentric rotation of the honing mount is rotated; And an auxiliary supporting roller for preventing contact of the eccentric supporting roller.

Through the above solution, the honing tool device for a machine tool according to the present invention provides the following effects.

First, since the mounting end is eccentrically and angularly moved in the vertical clearance space and the horizontal clearance space formed inside the mounting hole, the honing member is automatically moved along the center of the machining hole of the workpiece during the honing process, It is possible to improve the quality and to prevent the breakage of the honing member.

Second, the multidimensional rotary support portions are rotatably supported on the outer surface in various directions by a plurality of support roller portions arranged to cross each other along the circumferential direction, so that the frictional force is reduced by rolling friction, So that the quality of honing with respect to the workpiece can be further improved.

Third, the honing attachment portion of the honing attachment portion is selectively adjusted in accordance with the insertion depth of the elastic member inserted into the spring engagement portion, so that the amount of eccentricity and the amount of deflection Can be precisely adjusted so that the machining precision can be further improved.

Fourthly, the opposing angle corresponding ball portion is in close contact with the rim of the round contact groove formed at the end of the extended support portion extending from the rear end of the honing mounting portion, so that the honing mounting portion is elastically supported as a rotation supporting point. Thus, the honing mounting portion is automatically moved to the center of the workpiece The collision between the machined workpiece and the honing member is prevented beforehand, so that the durability can be further improved.

Figures 1a and 1b are cross-sectional views of a honing tool device for a machine tool according to an embodiment of the invention.
FIG. 2 is an exploded cross-sectional view illustrating a cover portion, a honing mounting portion, and a multidimensional rotation support portion of a honing tool for a machine tool according to an embodiment of the present invention.
FIG. 3 is a front view of a state in which a support roller portion of a multi-dimensional rotary support portion is disposed in a honing tool for a machine tool according to an embodiment of the present invention; FIG.
4 is a cross-sectional view illustrating a state in which the honing mount is eccentrically rotated in a honing tool for a machine tool according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view illustrating a state in which a honing mounting portion is deflected in a honing tool for a machine tool according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a honing tool for a machine tool according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a honing tool device for a machine tool according to an embodiment of the present invention. FIG. 2 is a side view of the honing tool device for a machine tool according to an embodiment of the present invention, FIG. 3 is a front view of the support roller portion of the multi-dimensional rotary support portion of the honing tool for a machine tool according to an embodiment of the present invention. FIG. 4 is a cross- FIG. 5 is a cross-sectional view illustrating a state in which a honing attachment portion is eccentrically rotated in a honing tool for a machine tool according to an embodiment of the present invention. FIG. 5 is a cross- Fig.

1A and 1B, a honing tool 200 for a machine tool according to an embodiment of the present invention includes a base mounting portion 110, a cover portion 120, a honing mounting portion 130, 140, and a multi-dimensional rotation support unit 150.

Here, the base mounting portion 110 has a ball insertion hole 111 formed at its center portion in the axial direction. In addition, the ball insertion hole 111 is inserted with an elastic member 112 which provides an elastic restoring force in an axial direction.

At this time, the spring insertion portion 111 may be inserted with a spring engagement portion 113 on the rear end side of the elastic member 112 so that the elastic member 112 may be elastically restored. That is, the elastic member 112 may be fixed to the spring insertion portion 111 by inserting the spring engagement portion 113 into the ball insertion hole 111 and then coupling the rear end portion to the spring engagement portion 113 side.

The base mounting portion 110 may have a spring fixing hole formed therethrough radially inward from the outer surface in a direction perpendicular to the axial direction so as to communicate with the ball insertion hole 111. At this time, a thread may be formed on the rim of the spring fixing hole, and an insertion adjusting member 114 having a corresponding screw groove may be screwed into the spring fixing hole.

The spring fixing hole may be formed at a position corresponding to one side of the outer surface of the spring engaging portion 113 so that the insertion adjusting member 114 is screwed into the spring engaging portion 113 . Accordingly, even when the pressing force is applied to the front end side of the elastic member 112 in the axial direction, the spring inserted portion 113 is firmly inserted into the ball insertion hole 111, So that it can be stably restored.

In addition, on the front end side of the elastic member 112, that is, on the entrance side of the ball insertion hole 111, there is disposed the corresponding angle-opposing ball portion 140 which is in close contact with an end portion of an extended support portion 132 to be described later.

The base mounting portion 110 is provided at the rear end thereof with a drive mounting portion 115. The driving unit 115 may be mounted on the driving unit (not shown), and may have various shapes according to the driving unit (not shown).

For example, when the driving means (not shown) is provided by a general machine tool such as a CNC lathe, the driving mounting portion 115 may have an external profile such as to be sloped toward the center portion so as to be narrowed in cross- Respectively. If the driving means (not shown) is provided exclusively for the honing machine, the driving attachment portion 115 may be threaded on the outer surface and screwed to the honing machine. That is, in the present embodiment, the driving attachment portion 115 is formed to have an outer profile that is inclined toward the center portion so that the sectional area becomes narrower toward the rear end portion. However, the driving attachment portion 115 may vary depending on the driving means Design can be changed.

Meanwhile, the cover part 120 is formed with a mounting hole 121 in the axial direction so that both ends thereof are opened and a mounting space is formed therein. The cover 120 is disposed at a front end portion of the base mounting portion 110 and has a front end portion of the base mounting portion 110 inserted into the mounting space at the entrance side of the mounting hole 121, . For this purpose, the diameter of the mounting hole 121 is preferably set to correspond to the diameter of the front end of the base mounting portion 110. At this time, the rim of the mounting hole 121 and the outer surface of the front end side of the base mounting portion 110 are formed with threads and screw grooves which are mutually engaged and can be screwed to each other.

In addition, the mount fixing portion 121b can be integrally protruded radially inward from the rim of the mounting hole 121 on the front end side of the cover portion 120. [ At this time, a cap insertion hole 121a communicating with the mounting hole 121 may be formed on the inner side of the mounting fixing portion 121b. The cap insertion hole 121a may be formed in a radially inward stepped axial direction. Thereby, the component inserted into the mounting space can be prevented from being arbitrarily disengaged through the front end portion.

A mounting cap 124 is provided on the front end of the cover part 120. At this time, a cap wing portion 124b protrudes radially outward from the outer periphery of the front end side of the mounting cap 124 as one body. When the mounting cap 124 is inserted into the cap insertion hole 121a, the cap wing portion 124b is brought into close contact with the front surface of the cover portion 120 and is detachable Can be combined.

At this time, a mounting communication hole 124a may be formed at the center of the mounting cap 124, and the honing mounting portion 130 may be formed to penetrate the mounting communication hole 124a in a state where the rear end portion is inserted into the mounting space .

Meanwhile, the honing mounting portion 130 includes a mounting end 131, an extending support portion 132, and an adjustment extension portion. Specifically, the mounting end 131 is disposed in the mounting space, and at the rear end, the extending support portion 132 extends toward the rear side, and the adjustment extending portion extends toward the front side. Here, the rear side is preferably understood to be the direction of the base mounting part 110, and the front side is preferably understood as a direction facing the base mounting part 110. [

At this time, a stepped portion 137 protruding radially outward is integrally formed on the outer periphery of the rear end side of the mounting end portion 131. At this time, it is preferable that the stepped portion 137 is formed to have a diameter less than a diameter of the mounting hole 121. It is preferable that the mounting end 131 is formed to have a diameter smaller than a diameter of the mounting communication hole 124a. A vertical clearance space 122 is formed in the mounting space so that the honing mounting portion 130 can be eccentrically rotated along the rim of the mounting hole 121 by the rotational force of the base mounting portion 110 when the base mounting portion 110 rotates .

At this time, it is preferable that a frictional reducing part 125 is further provided on the front side of the step part 137. In detail, the friction reducing portion 125 may be formed with a rotation support hole 125b having a rim diameter corresponding to the diameter of the mounting end 131. The mounting end portion 131 may be inserted into the rotation support hole 125b and the friction reducing portion 125 may surround the outer circumference of the mounting end portion 131. [ The friction reducing portion 125 may be formed to have a diameter smaller than a diameter of the mounting hole 121 so that the vertical clearance space 122 can be formed. At this time, the friction reducing portion 125 may be set to have a diameter corresponding to the diameter of the stepped portion 137.

At this time, a plurality of ball bearings 125a spaced apart from each other in the circumferential direction are interposed in the friction reducing portion 125. Here, the plurality of ball bearings 125a may be arranged such that the rear side thereof is in close contact with the front end of the step portion 137. [

When the extended support portion 132 is elastically supported by the inclined support portion 140 toward the front side, the stepped portion 137 is directly engaged with the mounting fixture portion 121b by the friction reducing portion 125 Contact can be prevented. In addition, since the friction reduction unit 125 interlockingly rotates the plurality of ball bearings 125a so as to minimize the loss of rotational force while preventing direct contact with the mounting fixing unit 121b when the honing mounting unit 130 rotates, The energy efficiency of the system can be further improved

Further, a rotation support ring 126 may be further provided on the front side of the friction reduction section 125. At this time, the rotation support ring 126 may be provided in a ring shape having a hollow 126a formed therein to enclose the outer circumference of the mounting end 131. [ The rotation support ring 126 may be formed to have a diameter smaller than a diameter of the mounting hole 121 and may be disposed between the mounting fixing portion 121b and the friction reducing portion 125. The rotation support ring 126 may be disposed such that its rear end is in close contact with the front side of the plurality of ball bearings 125a. Accordingly, when the friction reducing part 125 is rotated, direct contact with the mounting fixing part 121b is prevented, so that wear and / or breakage is minimized and the durability of the product can be further improved.

On the other hand, the extended support portion 132 integrally extends from the center of the rear end portion of the mounting end portion 131 toward the rear side. The extended support portion 132 may be formed to extend to a predetermined length so as to be in close contact with the corresponding angle-corresponding to the ball portion 140.

Here, the extended support part 132 may be formed to be thicker than the axial direction thickness of the multi-dimensional rotary support part 150 such that a horizontal clearance space 123 is formed in the mounting space. The horizontal clearance space 123 may be formed between the rear end of the multidimensional rotary support unit 150 and the front end of the base mounting unit 110, A free space may be provided.

Further, a round contact groove 132a is formed at an end portion of the extended support portion 132 facing the inclined corresponding ball portion 140. At this time, the inside diameter of the round contact groove 132a becomes narrower toward the front side of the extended support portion 132, and the entire inclined surface may be formed to be sloped toward the center portion. Further, the maximum diameter of the round contact groove 132a may be set to be less than a maximum diameter of the slanted portion 140 so that one side of the outside of the slanted portion 140 may stably adhere to the rim of the round contact groove 132a . Accordingly, even when the honing mounting portion 130 is eccentrically rotated or offset, the inclined corresponding ball portion 140 can be maintained in a state of being in close contact with the round contact groove 132a to provide a stable elastic support force .

Accordingly, the opposing-angle-corresponding ball portion 140 is in close contact with the rim of the round contact groove 132a to elastically support the honing mounting portion 130 as a rotation support point, so that the honing- The durability can be further improved because the collision between the workpiece shifted in position and the later-described honing member 163 is prevented. Furthermore, the opposing-angle-supporting ball portion 140 provides the elastic support force so as to stably maintain the rotation locus when the honing and mounting portion 130 is moved in the eccentric rotation direction and the angular-deviation direction, so that compatibility of honing with various workpieces can be improved.

The opposing angle-facing ball portion 140 is disposed at the entrance side of the ball insertion hole 111 so that the rear side thereof is in contact with the front end portion of the elastic member 112. Further, the opposing angle-supporting ball portion 140 is arranged to face the end of the extended support portion 132 and is elastically brought into close contact with the rim of the round contact groove 132a.

In this case, the opposing angle-facing ball portion 140 may have a diameter corresponding to the diameter of the ball insertion hole 111. Accordingly, when the confrontation ball portion 140 is pressed by the honing mounting portion 130 or provided with an elastic restoring force from the elastic member 112, the ball is stably spaced from the inside of the ball insertion hole 111, 132 can be stably supported.

Further, the inclined-angle corresponding bowl portion 140 may be formed in a ball shape. Accordingly, even if the honing attaching portion 130 is rotated at a high speed, no rotational force is applied to the elastic member 112, so that the loss or damage of the elastic force of the elastic member 112 is prevented, so that the durability of the product can be further improved . Of course, the opposing-angle-corresponding ball portion 140 may be formed in various structures as long as it has a round surface formed with a rounded outer surface profile so as to stably adhere to the round contact groove 132a. For example, the opposing angle corresponding ball portion may be provided in a bar shape, and a round surface formed by a rounded outer surface profile may be formed at the front end portion and may be in close contact with the round contact groove 132a.

At this time, the insertion depth of the spring coupling part 113 inserted into the ball insertion hole 111 can be adjusted. For example, the spring engaging portion 113 is moved toward the elastic member 112 so that the gap between the front end portion and the ball insertion hole 111 is narrowed so that the elastic restoring force of the elastic member 112 is increased, Can be fixed by the member (114). Accordingly, since the holding force of the opposing angle corresponding ball 140 is adjusted during rotation of the eccentric rotation of the honing mounting part 130 or the movement of the deflection corresponding to the rotational force or reciprocating power of the driving means (not shown) The required vibration force can be adjusted. Accordingly, since the range of the amount of eccentricity and the amount of deflection required for the workpiece (c) can be precisely adjusted as the honing attachment part (130) is pressed corresponding to the elastic support force of the opposing angle ball part (140) Can be further improved.

Meanwhile, the adjustment extension part may extend integrally from the front end of the mounting end 131 toward the front side. At this time, an insertion groove may be formed in the axial direction so as to open toward the front side at the front end of the adjustment extension part.

The rear end of the honing body 160 may be fixed with a honing fixing part at a front end of the adjustment extension part. At this time, a tool insertion hole may be formed in the center portion of the honing body 160 so as to insert the honing extension tool 170 in the axial direction. In addition, an extended honing part may be integrally extended to the front end of the honing body part 160, and an enlarged hollow may be formed at the center of the extended honing part so as to communicate with the tool insertion hole along the axial direction.

Here, the honing member 163 is mounted on the outer surface of the extended honing portion. At this time, the honing member 163 may be an alumina-based or hydrocarbon-based wheel. In detail, the grindstone can be selected depending on the material of the workpiece (c) and the type of cutting. Further, the grindstone can be selected in consideration of the kind of the particles, the particle size, the strength of the bond, the texture, the kind of the binder, and the like.

In addition, the honing member 163 may be provided on the outer surface of the extended honing portion so as to be spaced apart from each other in the radial direction to continuously perform stable cutting. In addition, a cutout groove may be formed in the extension honing portion to selectively adjust the diameter. In detail, the cut-out groove is axially cut on the outer surface of the extended honing portion and is spaced apart at predetermined intervals along the circumferential direction on the outer surface of the extended honing portion, and may be arranged alternately with the honing member 163.

The honing extension tool 170 may include a slide body and an extension bar. At this time, the slide body may be inserted to slide in the insertion groove, and the extension bar may be detachably coupled to the front end of the slide body to be inserted into the tool insertion hole. At this time, an extended end integrally extending toward the front side may be provided at the front end of the extension bar. In detail, the extended end portion may be extended so as to narrow the cross-sectional area toward the center toward the front side.

Here, as the enlarged end portion is moved forward and the rim of the expanded hollow is pressed radially outward, the incision groove may be opened to enlarge the diameter of the extended honing portion. The honing member 63 and the workpiece c can be selectively moved by sliding the honing extension tool 170 forward or backward while the honing member 163 is worn to selectively adjust the diameter of the extended honing portion, So that continuous cutting can be performed, and the productivity of the product can be improved.

The extension adjusting part 180 may be provided to surround the outer surface of the adjustment extension part. At this time, the extension adjuster 180 may be connected to the slide body through a slot formed at one side of the outer surface of the adjustment extension part. The extension adjuster 180 may be screwed to the outer surface of the adjustment extension portion so as to be selectively moved in the axial direction corresponding to the rotation. Accordingly, when the extension adjusting unit 180 is moved in the axial direction along the outer surface of the adjustment extension unit, the honing extension tool 170 can be moved in conjunction with the extension adjustment unit 180. Accordingly, the honing body 160 can selectively adjust the diameter required for the workpiece c only by rotating the extension adjuster 180, so that the honing member 163 with respect to the workpiece c ) Can be further improved.

In this embodiment, the honeycomb body 160 having the diameter of the honing body 160 is selectively controlled. However, the honeycomb body 160 may be attached to the workpiece (c) 163 may be applied to the honing attaching portion 130. [0053]

1 to 3, the multi-dimensional rotary support unit 150 is disposed in the mounting space such that the extended support unit 132 passes through the center of the mounting space. Specifically, the multi-dimensional rotary support 150 has a through-hole 151 formed at its center in the axial direction. At this time, the through-hole 151 may be set to have a diameter equal to or larger than a maximum diameter of the extended support portion 132, and the extended support portion 132 may be stably penetrated and inserted.

The stepped mounting groove 152 is recessed in a stepped manner toward the rear side of the front end of the multi-dimensional rotation supporting part 150. Here, the stepped mounting groove 152 may be formed horizontally from one side of the outer surface of the front end of the multi-dimensional rotation supporting part 150 to the other side passing through the middle part.

A plurality of insertion protrusions 153 may be provided at the rear end of the multi-dimensional rotation supporting part 150. In detail, the plurality of insertion protrusions 153 may protrude from the rear end of the multi-dimensional rotation supporting part 150 at predetermined intervals along the circumferential direction about the through-hole 151. The plurality of insertion protrusions 153 may be inserted into a base stepped groove portion 110a which is recessed in a stepped manner toward the rear side of the front end portion of the base mounting portion 110, And may be rotated in conjunction with rotation or reciprocation of the mounting portion 110.

Here, the multi-dimensional rotation supporting part 150 is formed to have a diameter smaller than a diameter of the mounting hole 121. The vertical space 122 is formed in the mounting space so that the honing mount 130 can eccentrically rotate along the rim of the mounting hole 121 by the rotational force of the base mount 110 when the base mount 110 rotates. .

The support rollers 154 are disposed at the front end and the rear end of the multi-dimensional rotation supporting part 150 so as to cross each other along the circumferential direction of the multi-dimensional rotation supporting part 150. The supporting roller unit 154 includes a front supporting roller unit 154A provided at a front end of the multi-dimensional rotation supporting unit 150 and a rear supporting roller unit 154 disposed at a rear end of the multi- 154B.

In this embodiment, the front supporting roller portion 154A and the rear supporting roller portion 154B are provided in pairs at the front end and the rear end of the multi-dimensional rotary supporting portion 150, respectively .

Here, the pair of front supporting roller portions 154A may be spaced apart from each other along the circumferential direction about the through-hole 151. At this time, the pair of front supporting roller portions 154A may be arranged to face each other in the width direction with the through-hole 151 therebetween. Here, each of the front supporting roller portions 154A may be inserted into the stepped mounting groove portion 152. That is, the pair of front supporting roller portions 154A can be inserted into the step mounting groove portion 152 with the through-hole 151 interposed therebetween.

At this time, the pair of rear supporting roller portions 154B may be arranged to cross the pair of front supporting roller portions 154A. For example, when the pair of front supporting roller portions 154A are disposed to face each other in the vertical direction, the pair of rear supporting roller portions 154B may be disposed to face each other in the left-right direction. That is, as shown in FIG. 3, the supporting roller portions 154A and 154B are not overlapped with each other when viewed from the front, because they are spaced apart from each other in the circumferential direction about the through-hole 151.

As a result, the outer surface of the multi-dimensional rotary support unit 150 is supported by the support roller unit 154 in various directions when the honing and mounting unit 130 is moved in the eccentric and angular directions, The mounting portion 130 is easily centered to the machining hole position of the workpiece c and smoothly rotated so that the honing quality with respect to the workpiece c can be further improved. In addition, friction of the multidimensional rotary support part 150 with the rim of the mounting hole 121 is reduced to minimize the rotational loss of the honing mounting part 130, and wear or damage due to direct contact with the rim And the durability can be further improved.

The front supporting roller unit 154A includes a first eccentric supporting roller 155 and a first auxiliary supporting roller 156. [ Specifically, the first eccentric support rollers 155 are provided in pairs and are mutually spaced in the width direction. The first eccentric support rollers 155 may be disposed to have axes corresponding to the axes of the multidimensional rotary support unit 150 and may be rotated in directions corresponding to each other when the multidimensional rotary support unit 150 rotates. At this time, the interval between the first eccentric support rollers 155a and 155b is preferably set to an interval at which the interlocking protrusion 137a provided in the stepped portion 137 is inserted.

Here, the interlocking protrusions 137a may be provided in a plurality of spaced apart from each other in the circumferential direction around the extended support portion 132, and may extend integrally from the rear end of the step portion 137 toward the rear side . Further, the interlocking projections 137a may be inserted between the first eccentric support rollers 155a and 155b.

At this time, the first eccentric support rollers 155a and 155b may be prevented from being separated from each other as they are caught by the rim of the stepped mounting groove 152 when the base mount 110 rotates. In addition, the multi-dimensional rotary support unit 150 may be rotated by interlocking rotation force transmitted by the interlocking projections 137a interposed between the first eccentric support rollers 155a and 155b.

The first eccentric support rollers 155a and 155b may be disposed so that one side of the outer circumferential surface overlaps the outer circumferential profile of the multi- Accordingly, the multidimensional rotary support unit 150 can be stably rotated without touching the rim of the mounting hole 121 and being prevented from being rotated even if rotated. Accordingly, when the first eccentric supporting rollers 155a and 155b come into contact with the rim of the mounting hole 121, the rotation of the first eccentric supporting rollers 155a and 155b is rotated corresponding to the rotational force of the multi- The driving efficiency of the product can be further improved.

The first auxiliary support roller 156 may be arranged to be perpendicular to the rotation axis of the first eccentric support rollers 155a and 155b. At this time, the first auxiliary support roller 156 may be disposed radially inward of the first eccentric support rollers 155a and 155b so as to be adjacent to the mounting hole 121. [

Here, the first auxiliary support roller 156 may be formed in a bar shape, and each of the first eccentric support rollers 155a and 155b may extend to a length that allows the first and second eccentric support rollers 155a and 155b to contact the outer peripheral surfaces at both ends, 152, which are formed on both sides of the frame. The first auxiliary support roller 156 may be disposed between the first eccentric support roller 155 and the extended support portion 132 to prevent the first auxiliary support roller 156 from contacting each other. The first auxiliary support roller 156 may have a contact area minimized when the first eccentric support roller 155 contacts the first eccentric support roller 155 to prevent the first eccentric support roller 155 from being separated even if the first eccentric support roller 155 is pressed radially inward. The durability of the product can be further improved.

The rear supporting roller portion 154B includes a second eccentric supporting roller 157 and a second auxiliary supporting roller 158. [ At this time, the second eccentric support roller 157 and the second auxiliary support roller 158 have a shape and a structure corresponding to the first eccentric support roller 155 and the first auxiliary support roller 156 Therefore, detailed explanation is omitted.

The base mounting part 110 may be formed with the base stepped groove part 110a so as to be orthogonal to the step mounting groove part 152. [ The pair of rear supporting roller portions 154B may be disposed at the center of the base stepped groove portion 110a such that the pair of rear supporting roller portions 154B are opposed to each other And can be inserted into the base stepped groove portion 110a. The insertion protrusions 153 may be disposed between the second eccentric support rollers 157a and 157b.

The insertion protrusion 153 is inserted between the second eccentric support rollers 157a and 157b so that the rotational force of the base mount 110 can be stably transmitted to the multidimensional rotary support unit 150. [ Thus, the base mounting portion 110, the multi-dimensional rotation supporting portion 150, and the honing mounting portion 130 can be interlocked with each other in accordance with the rotational force and reciprocating power of the driving means (not shown).

4, the rotational axis s2 of the honing mounting portion 130 is spaced radially outward from the center axis s1 of the workpiece c when rotational force is transmitted by the driving means (not shown) And can be eccentrically rotated. The friction reducing portion 125, the stepped portion 137, and the multi-dimensional rotation supporting portion 150 may be eccentrically rotated so that one side of the external surface contacts the rim of the mounting hole 121. The stepped portion 137 may be closely contacted to press the friction reducing portion 125 as the extended supporting portion 132 is elastically supported from the inclined corresponding ball portion 140, Can be stably rotated as the plurality of ball bearings 125a are provided even when the ball bearings 125 are pressed by the step portion 137. [

Accordingly, the honing attachment part 130 is stably eccentrically rotated while being coupled to the cover part 120 by the elastic support force of the opposing angle-supporting ball part 140, so that the workpiece (c) The vertical vibration can be provided to further improve the cutting quality of the product. Further, when the honing mounting part 130 is rotated eccentrically, the multidimensional rotary supporting part 150 reduces the friction by the supporting roller part 154 when it comes into contact with the rim of the mounting hole 121, Wear or breakage of the cover 120 is prevented, and driving efficiency and durability can be further improved.

5, the rotation axis s3 of the honing mounting part 130 may be inclined from the rotation axis s2 of the steady state to the inclination angle [theta]. That is, the honing mounting part 130 may be eccentrically disposed such that the rotation axis s3 is inclined from the rotation axis s2 in a steady state to the inclination angle? With respect to the center point of the opposing angle-facing ball 140 . Here, the inclination angle? May be set at various angles corresponding to the vertical clearance space 122 and the horizontal clearance space 123.

The friction reducing portion 125, the step portion 137, and the multidimensional rotation supporting portion 123 are disposed between the vertical clearance space 122 and the horizontal clearance space 123 as the honing mounting portion 130 is eccentrically disposed. 150 may be inclined corresponding to the inclination angle [theta]. Here, the opposing angle ball portion 140 is in contact with the round contact groove 132a by the elastic restoring force of the elastic member 112 even when the extended support portion 132 is inclined corresponding to the inclination angle [theta] The state can be maintained continuously.

Accordingly, even when the honing mounting part 130 is moved at a predetermined angle, the state where the honeycomb mounting part 130 is supported by the opposing angle corresponding ball part 140 can be maintained, and the state of being coupled to the cover part 120 can be stably maintained . Further, the multi-dimensional rotary support unit 150 can be rotated in a state where the supporting roller unit 154 is in contact with one side of the mounting hole 121, The honing mounting portion 130 can be rotated.

As the honing mounting portion 130 is eccentrically rotated and offset in the vertical clearance space 122 and the horizontal clearance space 123, when the honing operation is performed on the workpiece (c), the honing member 163 are automatically moved along the center of the machining hole of the workpiece (c), it is possible to perform the honing process of the workpiece with the eccentric position deviation, thereby improving the quality and preventing the damage of the honing member 163.

 That is, the multi-dimensional rotary support unit 150 is configured to rotate the support roller unit 154 at various angles, not only in the eccentric rotation of the honing mounting unit 130 but also in the rotated state, So that the efficiency of the product can be further improved. In addition, the honing mounting portion 130 has a simple structure in which the mounting end portion 131 is inserted into the cover portion 120, which is detachably coupled, Sex can be further improved.

Here, the terms "comprises", "comprising", "having", or "having" as used in the above description mean that the constituent element can be included unless otherwise stated. It is to be understood that the invention is not limited to the components but may include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And these modifications fall within the scope of the present invention.

110: Base mounting part 111: Ball insertion hole
112: elastic member 120: cover part
121: mounting hole 122: vertical clearance space
123: Horizontal clearance space 125: Friction reducing section
130: Honing mounting part 131: Mounting end
132: extended support portion 132a: round contact groove
140: spindle corresponding to the spindle 150: multi-dimensional rotation support
154: support roller part 200: honing tool device for machine tool

Claims (5)

A base mounting portion having a rear end portion coupled to a driving means for providing a rotational force and reciprocating power, and having a ball insertion hole formed therein in an axial direction so that an elastic member is inserted therein;
A cover portion having a mounting hole formed in an axial direction so that both ends thereof are opened and a mounting space formed therein, and a front end portion of the base mounting portion is inserted and coupled to a rear end portion;
A honing attaching portion having an extending support portion extending from the mounting end portion provided at the rear end portion to the rear side and being inserted into the mounting space through the front end portion of the cover portion and having a honing member for honing the workpiece at the front end portion;
A ball corresponding to the angle corresponding to the ball insertion hole, which is disposed at the entrance side of the ball insertion hole and is elastically restored from the elastic member, And
And a multi-dimensional rotation supporting unit disposed inside the mounting space such that the extending support unit passes through the center of the mounting space to support eccentric rotation and angular movement of the honing mounting unit. The method according to claim 1,
And a round contact groove is formed at an end portion of the extended support portion facing the sloping corresponding ball portion so that the inner diameter becomes narrower toward the front side of the extended support portion and the entire inclined surface is sloped toward the center portion,
And the opposing angle corresponding ball portion is disposed so as to face the end portion of the extended support portion and resiliently attached to the rim of the round contact groove. The method according to claim 1,
Wherein the mounting end and the multi-dimensional rotation supporting portion are provided to have a diameter smaller than a diameter of the mounting hole so that a vertical clearance space is formed in the mounting space,
Wherein the extended support portion is formed to be thicker than an axial thickness of the multi-dimensional rotation supporting portion so that a horizontal clearance space is formed inside the mounting space. The method according to claim 1,
And a mounting fixing portion protruding radially inward from a rim of the mounting hole is provided at a front end portion of the cover portion,
The mounting end portion is provided with a stepped portion protruding stepwise radially outwardly,
Further comprising a friction reducing portion disposed to surround the mounting end portion and disposed between the mounting fixing portion and the step portion and having a plurality of ball bearings spaced apart in the circumferential direction. The method according to claim 1,
Wherein a plurality of support roller portions are disposed at the front end and the rear end of the multi-dimensional rotation supporting portion so as to cross each other along the circumferential direction of the multi-dimensional rotation supporting portion,
The support roller portion
An eccentric support roller disposed so as to correspond to an axial direction of the honing mounting portion and spaced apart from each other to selectively contact the rim of the mounting space during eccentric rotation of the honing mounting portion,
And an auxiliary support roller disposed radially inward of the eccentric support roller to prevent contact between the extended support portion and the eccentric support roller during eccentric rotation of the honing attachment portion.

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