KR101934510B1 - Shank for rotary bar - Google Patents

Shank for rotary bar Download PDF

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Publication number
KR101934510B1
KR101934510B1 KR1020180051377A KR20180051377A KR101934510B1 KR 101934510 B1 KR101934510 B1 KR 101934510B1 KR 1020180051377 A KR1020180051377 A KR 1020180051377A KR 20180051377 A KR20180051377 A KR 20180051377A KR 101934510 B1 KR101934510 B1 KR 101934510B1
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KR
South Korea
Prior art keywords
shank
coupler
rotary bar
formed
locking
Prior art date
Application number
KR1020180051377A
Other languages
Korean (ko)
Inventor
김창성
이영규
Original Assignee
김창성
이영규
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.)
Filing date
Publication date
Application filed by 김창성, 이영규 filed Critical 김창성
Priority to KR1020180051377A priority Critical patent/KR101934510B1/en
Application granted granted Critical
Publication of KR101934510B1 publication Critical patent/KR101934510B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor

Abstract

The present invention relates to a shank for a rotary bar to maintain processing accuracy in spite of abrasion caused by using the shank for a long period of time, which comprises: a bonding unit to which a grinding tool to process a surface of an object is bonded; a mounting unit extending in the bonding unit, and inserted into a coupler; and a flange formed between the bonding unit and the mounting unit. The mounting unit comprises contact parts that are in contact with the coupler to restrict insertion of the shank for a rotary bar, and the flange is in contact with the coupler in case of abrasion of the contact parts to restrict insertion of the shank for a rotary bar. As stated above, the shank for a rotary bar is prevented from being inserted into the coupler more than a predetermined depth to maintain processing accuracy in spite of abrasion caused by using the shank for a long period of time.

Description

Shank for rotary bar {SHANK FOR ROTARY BAR}

The present invention relates to a shank for a rotary bar, and more particularly to a shank for mounting a rotary bar for polishing a surface of an object to a processing tool such as a grinder.

Generally, the metal material and / or alloy material is processed (e.g., welded, molded, cast, trimmed, slit, drilled, sheared, etc.) do.

The above-described processing methods form a jagged protrusion called a "burr" in a metal material, and the process of removing such a protrusion is referred to as "de-burring".

In the deburring step, a rotary bar rotating by a processing tool such as a grinder is used. Rotary burrs are used not only for grinding or finishing metal or alloy materials, but also for forming abrasive textures of various shapes and sizes.

At one end of the rotary bur, a polishing portion for grinding or finishing a material is formed, and at the other end, a shank mounted to a processing tool such as a grinder is formed. Since such a rotary bur is mounted on a grinder by a collet chuck or the like, it is difficult to mount and remove the rotary bur and it is difficult to use various types of rotary bur.

Korean Utility Model Registration Utility Model No. 20-0373648 (Oct. 10, 2005) discloses a 'grinding holder attachment / detachment structure for a hand grinder' for solving the above-mentioned problem.

The grinding and polishing structure of the hand grinder has a grinding holder having an abrasive for mounting an abrasive for machining an object on one side and an insertion rod having a groove on the other side and a seating part for receiving the insertion rod of the grinding holder, A sleeve mounted on the circumferential surface of the coupling so as to move in and out of the through hole formed at the center of the coupling according to the movement of the sleeve, And a rocking ball arranged to be able to move the ball.

In the conventional detachable structure, three locking protrusions formed between the inclined surface of the polishing holder and the insertion bar and three fixing grooves formed at the tip of the through hole continuing from the coupling grooves of the coupling are engaged to transmit the rotational force of the hand grinder to the polishing holder do.

Therefore, it is difficult to process the grinding wheel and the fixing groove in the grinding holder and the coupling, so that it is complicated and time-consuming and costly. In addition, there is a problem that the engaging protrusion and the fixing groove are easily abraded to shorten the life span, and the fastening force between the polishing holder and the coupling is low, thereby lowering the machining accuracy.

Korean Utility Model Registration No. 20-0373648 (2005.01.10.)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shank for a rotary bar capable of maintaining machining accuracy against wear due to use for a long period of time.

Another object of the present invention is to provide a shank for a rotary bar capable of efficiently transmitting a rotational force of a grinder and capable of strengthening a fastening force with a coupling.

According to an aspect of the present invention, there is provided a rotary bar shank comprising: a joint portion to which a polishing tool for working a surface of an object is joined; a mounting portion extending from the joint portion to be inserted into the coupler; . At this time, the mounting portion includes a contact piece that is in close contact with the coupler and restricts the insertion of the shank for the rotary bar, and the flange is in close contact with the coupler when the contact piece is worn, thereby restricting the insertion of the shank for the rotary bar.

The contact piece includes a first tapered section formed on the flange side and closely contacted with the coupler to restrict insertion of the shank for the rotary bar, a stud extended from the tapered section, And a second tapered section for preventing the shank of the rotary bar from being broken.

The mounting portion includes a contact piece that is in close contact with the coupler, a locking piece that fixes or unfixes the mounting portion inserted into the coupler, and a transmission piece that transmits the rotational force of the coupler to the rotary bar.

The locking piece includes a locking groove into which a locking ball provided in the coupler is inserted and a reinforcing section formed at both ends of the locking groove.

The electric parts may be formed on the side of the joint portion or on the opposite side of the joint portion with respect to the lock piece. Further, the electric parts may be respectively formed on the side of the joint portion and the side opposite to the joint portion with respect to the lock piece. At this time, the electric parts are formed in the shape of a shaft having a polygonal section so as to transmit the rotational force of the coupler to the rotary bar.

The present invention constructed as described above is characterized in that a contact piece including a first tapered section is provided between a joint portion to which the abrasive tool is joined and a mounting portion to be inserted into the coupler so that the shank for the rotary bar is prevented from being inserted into the coupler beyond a certain depth . In particular, even if the first tapered section is worn due to prolonged use, the insertion of the shank for the rotary bar is restricted through the flange, thereby maintaining the machining accuracy.

Further, in the present invention, a transmission part having a polygonal cross section is formed in a mounting part inserted into the coupler, so that the rotational force of the grinder applied through the coupler can be transmitted without loss. Particularly, when the electric parts are formed at the front end and the rear end of the lock parts, the rotational force of the grinder can be transmitted more efficiently.

Further, in the present invention, a reinforcing section of a circular cross section is formed at both ends of a locking groove into which a locking ball of a coupler is inserted. Therefore, a locking ball radially disposed along the periphery of the mounting portion is evenly brought into contact with the locking groove, so that the axial tensile force by the locking ball can be evenly applied in all directions.

1 is a side view of a shank for a rotary bar according to a first embodiment of the present invention;
2 is a side view of a shank for a rotary bar according to a second embodiment of the present invention;
3 is a side view of a shank for a rotary bar according to a third embodiment of the present invention.
4 and 5 are views showing a process of mounting a shank for a rotary bar to a coupler according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 1, the shank 100 for a rotary bar according to the first embodiment of the present invention is a straight type shank extending in one direction.

At one end of the shank 100 for a rotary bar is formed a joint portion 110 to which an abrasive tool T for working the surface of the object is joined. The other end of the shank 100 for a rotary bar is provided with a mounting portion 120 to be mounted on a coupler provided on a tool such as a grinder (not shown). A flange 130 is formed between the connection part 110 and the mounting part 120 to define a space therebetween.

The joint portion 110 has a shaft shape extending in one direction. One end (right side in the figure) where the polishing tool T is bonded is formed into a taper shape extending toward the end. At this time, since the bonding portion 110 can have various shapes according to the polishing tool T bonded to one end, detailed description thereof will be omitted.

On the other hand, a polishing tool T connected to an end of the joint portion 110 may be a cone-shaped grindstone, a columnar grindstone, a spherical grindstone, a wire brush, or the like depending on the material, shape, and polishing method of the object.

The mounting portion 120 is in the form of a multi-stage shaft extending from the flange 130 to the opposite side of the joint portion 110. At this time, the cross-sectional area of the mounting portion 120 decreases toward the end (left side in the drawing), so that the mounting portion 120 can be easily inserted into the coupler (400 in FIG. 4) when the shank 100 is mounted.

The mounting portion 120 is divided into a contact piece 140, a locking piece 150, and a motorized piece 160. The contact piece 140 is a portion which is in close contact with the coupler 400 when the shank 100 is mounted and the lock piece 150 is a portion for fixing or releasing the shank 100 inserted into the coupler 400, The part 160 transmits the rotational force of the coupler 400 to the shank 100.

As shown in the figure, the contact piece 140 of the present embodiment is formed at an end of the flange 130 side, the lock piece 150 is formed at the end of the mounting portion 120, (140) and the locking part (150).

The contact piece 140 comprises a first tapered section 142 formed on the flange side, a stud 144 extending from the tapered section 142 and a second tapered section 144 formed on the end of the stud.

The first tapered sseen 142 contacts the coupler 400 when the shank 100 is mounted and serves to limit the insertion of the shank 100. [ The stud 144 is an accurate engagement section that contacts the coupler 400 when the shank 100 is mounted. The stud 144 aligns the centers of the shank 100 and the coupler 400, ) To prevent the flow of water. The second tapered section 144 serves to disperse the rotational moment acting on the electric part 160 side during the polishing operation to prevent the shank 100 from being broken.

In addition, the first tapered sceens 142 may serve to align the centers of the shank 100 and the coupler 400, in addition to the above-described functions.

The locking part 150 includes a locking groove 152 into which a locking ball 420 of the coupler 400 is inserted and reinforcement sections 154 and 156 formed at both ends of the locking groove 152.

The locking grooves 152 are formed in a semicircular cross section so that at least a part of the locking balls 420 can be inserted and the plurality of locking balls 420 arranged on the peripheral radial direction of the mounting portion 120 are inserted into the mounting portions 120 As shown in FIG.

The reinforcement sections 154 and 156 are configured such that the locking balls 420 radially disposed along the periphery of the mounting portion 120 uniformly contact the locking grooves 152 so that the axial tensile force by the locking balls 420 is uniformly applied in all directions . For this purpose, the reinforcing sections 154 and 156 are formed in the shape of a round bar having the same diameter as the maximum outer diameter of the locking groove 152, and are formed at both ends of the locking groove 152, respectively.

As described above, the electric part 160 transmits rotational force of the coupler 400 to the shank 100, and in this embodiment, it is formed on the side of the joint part 110 with reference to the locking part 150.

The electric parts 160 are formed in the shape of a shaft having a polygonal cross section which is in contact with the reinforcing section 154 so as to transmit the rotational force of the grinder applied through the coupler 400 to the shank 100 without loss.

In the present embodiment, the electric parts 160 are illustrated as having a hexagonal cross-sectional shape, but the present invention is not limited thereto. The electric parts 160 may be formed in various shapes in consideration of easiness of attachment of the shanks 100 and torque transmission efficiency.

The flange 130 is positioned between the joint 110 and the mount 120 and has a larger diameter than the joint 110 and the mount 120. The flange 130 is spaced apart from the coupler 400 when the shank 100 is mounted and contacts the coupler 400 when the first tapered section 142 is worn due to prolonged use, To the inside of the frame. Therefore, even if the shank 100 is worn due to prolonged use, it does not flow in the axial direction, so that the machining precision can be maintained.

Referring to FIG. 2, the shank 200 for a rotary bar according to a second embodiment of the present invention will be described.

The rotary bar shank 200 according to the present embodiment is of the same straight type as the shank 100 described above. A bonding portion 210 to which an abrasive tool T for bonding a surface of an object is bonded; a mounting portion 220 to be attached to a coupler provided on a tool such as a grinder (not shown); a bonding portion 210; And a flange 230 separating between the mounting portions 220.

Since the bonding portions 210 to which the polishing tool T is bonded among the structures 210 to 230 described above are the same as those of the first embodiment described above, detailed description thereof will be omitted.

The mounting portion 220 has a multi-stage shaft shape extending from the flange 230 to the opposite side of the joint portion 210 and having a smaller cross-sectional area toward the end portion. The mounting portion 220 includes a contact piece 240 that is in close contact with the coupler 400 when the shank 200 is mounted, a locking piece 250 that fixes or fixes the shank 200 inserted into the coupler 400, And an electric part 260 for transmitting the rotational force of the coupler 400 to the shank 200.

The contact part 240 includes a first tapered section 242 formed on the side of the flange 230 and a first stud 244 extending from the first tapered section 242 and a second stud 244 formed on the side of the first stud 244 A second tapered section 246 and a second stud 248 extending from the second tapered section 246.

The first tapered sieve 242 serves to restrict the insertion of the shank 200 by contacting the coupler 400 when the shank 200 is mounted and the second tapered section 246 serves to restrict the insertion of the shank 200, To disperse the rotational moment acting on the shank 200 to prevent the shank 200 from being broken.

The first stud 244 is a precision engagement section that contacts the coupler 400 when the shank 200 is mounted. The first stud 244 aligns the center of the shank 200 and the coupler 400, (200). ≪ / RTI >

A tapered section 249 may also be added to the end of the first stud 244, that is, the portion following the reinforcing section 254, which will be described later. The tapered section 249 may also include a shank 200 In order to prevent breakage.

The locking part 250 includes a locking groove 252 formed in the stop of the mounting part 220 and into which a locking ball 420 provided in the coupler 400 is inserted. The locking groove 252 is formed in a semi-circular cross-section so that at least a part of the locking ball 420 can be inserted. The locking groove 252 has a shape extending along the periphery of the stop of the mounting portion 220 so that a plurality of locking balls 420 disposed on the circumference of the mounting portion 220 can be inserted.

At both ends of the locking groove 252, reinforcing sections 254 and 256 are respectively formed. The reinforcement sections 254 and 256 are configured such that the locking balls 420 radially disposed along the periphery of the mounting portion 220 uniformly contact the locking grooves 252 so that the axial tensile force by the locking balls 420 is uniformly applied in all directions . For this purpose, the reinforcing sections 254, 256 are formed in a round bar shape having a diameter equal to the maximum outer diameter of the locking groove 252.

The electric parts 260 for transmitting the rotational force of the coupler 400 to the shank 200 are formed on the opposite side of the joint portion 210 with respect to the lock piece 250.

The electric parts 260 are formed in a shaft shape of a hexagonal section in contact with the reinforcing section 256 so as to transmit the rotational force of the grinder applied through the coupler 400 to the shank 200 without loss.

The flange 230 is located between the joint 210 and the mount 220 and is formed to have a larger diameter than the joint 210 and the mount 220. The flange 230 is spaced apart from the coupler 400 when the shank 200 is mounted, The first tapered section 242 contacts the coupler 400 to prevent the shank 200 from being inserted into the coupler 400 when the first tapered section 242 is worn.

3, the shank 300 for a rotary bar according to the third embodiment of the present invention is the same straight type as the shanks 100 and 200 described above.

A mounting portion 320 mounted on a coupler provided on a tool such as a grinder (not shown), a mounting portion 320 mounted on a coupling portion 310, And a flange 330 for partitioning between the mounting portions 320.

The abutting portion 310 to which the abrasive tool T is bonded among the configurations 310 to 330 is the same as that of the first and second embodiments described above, so a detailed description thereof will be omitted.

The mounting portion 320 has a multi-stage shaft shape extending from the flange 330 to the opposite side of the joint portion 310 and having a smaller sectional area toward the end portion. The mounting portion 320 includes a contact piece 340 that is in close contact with the coupler 400 when the shank 300 is mounted, a locking piece 350 that fixes or fixes the shank 300 inserted into the coupler 400, And a first electric part 360 and a second electric part 370 for transmitting the rotational force of the coupler 400 to the shank 300.

The contact piece 340 includes a first taper section 342 formed on the side of the flange 330 and a stud 344 extending from the first taper section 342 and a second taper section 342 formed on the side of the stud 344, (346).

The first tapered sseen 342 serves to limit the insertion of the shank 300 into contact with the coupler 400 when the shank 300 is mounted and the second tapered section 346 serves to restrict the insertion of the shank 300, 2 serves to disperse the rotational moment acting on the side of the electric parts 360 and 370 to prevent the shank 300 from being broken.

The stud 344 is a precision engagement section that contacts the coupler 400 when the shank 300 is mounted and aligns the center of the shank 300 with the center of the coupler 400, ) To prevent the flow of water.

The locking part 350 includes a locking groove 352 formed in the stop of the mounting part 320 and into which a locking ball 420 provided in the coupler 400 is inserted. The locking groove 352 is formed in a semicircular cross section so that at least a part of the locking ball 420 can be inserted. The locking groove 352 has a shape extending along the periphery of the stopper of the mounting portion 320 so that a plurality of locking balls 420 arranged on the peripheral radial direction of the mounting portion 320 can be inserted.

At both ends of the locking groove 352, reinforcing sections 354 and 356 are respectively formed. The reinforcement sections 354 and 356 are configured such that the locking balls 420 radially disposed along the periphery of the mounting portion 320 uniformly contact the locking grooves 352 so that the axial tensile force by the locking balls 420 is uniformly applied in all directions . For this purpose, the reinforcing sections 354, 356 are formed in a round bar shape having a diameter equal to the maximum outer diameter of the locking groove 352.

The electric parts 360 and 370 of the embodiment are constituted by a first electric part 360 and a second electric part 370. The first electric part 360 and the second electric part 370 are connected to each other via a locking part 350 On the side of the joint 310 and the side opposite to the joint 310, respectively.

In this way, when both the first electric part 360 and the second electric part 370 are formed, the rotational force generated by the grinder can be dispersed and transmitted, so that the power transmission efficiency is excellent, It is possible to prevent problems such as breakage due to twisting.

The first electric part 360 and the second electric part 370 are formed in a shaft shape of hexagonal section so as to transmit the rotational force of the grinder applied through the coupler 400 to the shank 300 without loss. More specifically, the first electric powered part 360 is in the shape of a hexagonal sectioned shaft that is in contact with the reinforced section 354, and the second electric powered part 370 is of a hexagonal section Shaft shape. That is, the first electric parts 360 are formed in a relatively larger volume than the second electric parts 370.

The flange 330 is disposed between the joint 310 and the mount 320 and is formed to have a larger diameter than the joint 310 and the mount 320. The flange 330 is spaced apart from the coupler 400 when the shank 300 is mounted, The first tapered section 342 contacts the coupler 400 to limit the insertion of the shank 300 into the coupler 400 when the first tapered section 342 is worn.

4 and 5 illustrate a process of mounting the shank 300 for a rotary bar to the coupler 400 according to the third embodiment of the present invention.

The coupler 400 detachably attaches the shank 300 for a rotary bar includes a body 410 installed on a tool such as a grinder. Inside the body 410, an insertion hole 412 into which the shank 300 for a rotary bar is inserted is formed. The insertion hole 412 is formed with a first contact portion 414 and a second contact portion 416 which are in close contact with the first electric motor part 360 and the second electric motor part 370 of the rotary bar shank 300, respectively.

Here, the first contact portion 414 is formed to be engageable with the first electric power part 360, and the second contact portion 416 is formed with a hexagonal cross-section to engage with the second electric parts 370. Therefore, the rotational force of the grinder applied through the coupler 400 can be transmitted to the shank 300 without loss.

A locking ball 420 is installed at one end side of the body 410 on which the insertion hole 412 is formed to be able to be drawn in and drawn out. The locking ball 420 is a locking means for locking or unlocking the shank 300 inserted into the insertion hole 412 of the body 410. When the locking ball 420 penetrates the body 410 and is inserted into the locking groove 352, the shank 300 is fixed. When the locking ball 420 is released from the locking groove 352, the shank 300 is fixed Is released.

A holder 430 is movably coupled to the periphery of the body 410 and a spring 440 is interposed between the body 410 and the holder 430. A cap 450 is coupled to an end of the body 410 do.

The holder 430 moves along the body 410 and serves to draw in or pull out the locking ball 420. That is, when the holder 430 moves to the right in the drawing, the locking ball 420 is pulled in. When the holder 430 moves to the left in the drawing, the locking ball 420 is pulled out. At this time, the spring 440 elastically supports the holder 430 in the direction in which the locking ball 420 is drawn.

A process of mounting the rotary bar shank 300 to the coupler 400 having the above structure will be described.

First, the holder 430 is moved to the left so that the spring 440 is compressed so that the locking ball 420 is pulled out to the outside.

The rotary bar shank 300 is inserted through the right end of the body 410 while the locking ball 420 is drawn out.

Then, when the holder 430 moved to the left is released, the holder 430 is moved to the right due to the elasticity of the spring 440, and the locking ball 420 is drawn into the inside of the body 410.

The locking ball 420 inserted into the inside of the body 410 is inserted into the locking groove 352 of the shank 300 for the rotary bar to fix the shank 300 for the rotary bar.

When the holder 330 is moved to the left to compress the spring 440 while the shank 300 for the rotary bar is fixed to the coupler 400, the locking ball 420 inserted into the locking groove 352 And the shank 300 for the rotary bar is released. Accordingly, the shank 300 for the rotary bar can be separated from the coupler 400.

When the shank 300 for a rotary bar is inserted into the coupler 400, the first tapered section 342 contacts the inlet-side tip of the body 410, and the stud 344 contacts the inner wall of the body 410 do. At this time, the flange 330 is spaced from the front end of the inlet 410 of the body 410 by a predetermined distance.

The first tapered section 342 restricts the insertion of the shank 300 into the interior of the coupler 400 and the second tapered section 346 restricts the action of the first and second electric parts 360, So that the shank 300 is prevented from being broken. The stud 344 aligns the center of the shank 300 with the center of the coupler 400 and prevents the flow of the shank 300 mounted on the coupler 400.

The flange 330 contacts the coupler 400 to limit the insertion of the shank 300 into the coupler 400 when the first tapered section 342 is worn.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Those skilled in the art will understand. Therefore, the scope of protection of the present invention should be construed not only in the specific embodiments but also in the scope of claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.

100: Shank for rotary bar 110: Joint
120: mounting portion 130: flange
140: contact parts 150: lock parts
160: electric parts 400: coupler
410: Body 420: Locking Ball
430: holder 440: spring
450: Cap T: Abrasive tool

Claims (11)

  1. A shank for a rotary bar mounted on a tool through a coupler to process a surface of the object,
    A joining portion to which an abrasive tool for working a surface of an object is joined;
    A mounting portion extending from the joint portion and inserted into the coupler; And
    And a flange formed between the joint and the mounting portion,
    Wherein the mounting portion includes a contact piece which is in close contact with the coupler to restrict insertion of the shank for the rotary bar, a locking piece for fixing or releasing the mounting portion inserted into the coupler, and a transmission piece for transmitting the rotational force of the coupler to the rotary bar ,
    The contact piece includes a first taper section formed on the flange side and closely contacted with the coupler to restrict insertion of the shank for the rotary bar, a stud extended from the first taper section, And a second tapered section for preventing the shank of the rotary bar from being broken,
    Wherein the locking piece includes a locking groove in which a locking ball provided in the coupler is inserted and a reinforcing section formed at both ends of the locking groove, wherein the reinforcing section is formed by a round bar having a diameter equal to a maximum outer diameter of the locking groove ,
    Wherein the electric parts comprise a first electric part and a second electric part formed on a side opposite to the joint with respect to the lock part, And the second electric part is in the shape of a shaft having a polygonal section in contact with the reinforcing section,
    Wherein the flange is in close contact with the coupler when the contact piece is abraded to restrict insertion of the shank for the rotary bar.
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KR1020180051377A 2018-05-03 2018-05-03 Shank for rotary bar KR101934510B1 (en)

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Application Number Priority Date Filing Date Title
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KR101934510B1 true KR101934510B1 (en) 2019-01-02

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083918A2 (en) * 2010-01-11 2011-07-14 (주)삼화기업 Hand grinder
US20160051290A1 (en) 2009-06-15 2016-02-25 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
KR101728066B1 (en) * 2016-10-28 2017-05-02 주식회사 이엔큐원터치 Manufacturing method for the body of polishing tool fastener

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160051290A1 (en) 2009-06-15 2016-02-25 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
US20170296234A1 (en) 2009-06-15 2017-10-19 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
WO2011083918A2 (en) * 2010-01-11 2011-07-14 (주)삼화기업 Hand grinder
KR101728066B1 (en) * 2016-10-28 2017-05-02 주식회사 이엔큐원터치 Manufacturing method for the body of polishing tool fastener

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