WO2018226068A1 - Ensemble de fixation et meuleuse comprenant celui-ci - Google Patents

Ensemble de fixation et meuleuse comprenant celui-ci Download PDF

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Publication number
WO2018226068A1
WO2018226068A1 PCT/KR2018/006542 KR2018006542W WO2018226068A1 WO 2018226068 A1 WO2018226068 A1 WO 2018226068A1 KR 2018006542 W KR2018006542 W KR 2018006542W WO 2018226068 A1 WO2018226068 A1 WO 2018226068A1
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WO
WIPO (PCT)
Prior art keywords
protrusion
main
grinding blade
fixed
linear motion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2018/006542
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English (en)
Korean (ko)
Inventor
김점용
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2018226068A1 publication Critical patent/WO2018226068A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power

Definitions

  • the present invention relates to a device of the invention, and more particularly, to a stationary assembly and a grinding machine comprising the same.
  • Grinding machines are generally used to cut or polish objects. Such a grinding machine may use different grinding blades depending on the purpose of use, the place of use, and the like. At this time, in order to replace the grinding blade can be used a separate assembly tool. In this case, the user must carry a separate assembly tool, and if it is lost, it may be impossible to use a grinding machine.
  • Such a grinding machine may include a driving unit for rotating the grinding blade and the grinding blade. At this time, the grinding machine may be provided with a separate structure for fixing the grinding blade to the drive unit. This separate structure is formed in the form of a screw can be connected to the drive unit to secure the grinding blade.
  • Embodiments of the present invention seek to provide a stationary assembly and a grinding machine comprising the same.
  • a first body portion inserted into a grinding blade, a second body portion disposed to face the first body portion, are connected to the second body portion, and are rotated by the first body portion.
  • a support part for holding the grinding blade together with the first body part a linear movement part connected to the rotary shaft of the grinding machine and the first body part, and linearly moving through the second body part and the support part, and the linear part. It is disposed on the outer surface of the movement portion, it may be provided between the linear movement portion and the support portion may provide a fixed assembly including an elastic portion for providing a restoring force to the linear movement portion during the movement of the linear movement portion.
  • the first body part includes a first main body part connected to the linear motion part, and a first main protrusion part disposed on an outer circumferential surface of the first main body part and protruding toward the second body part side. can do.
  • the first body part may further include a first sub protrusion part protruding from an outer surface of the first main body part to be adjacent to the first main protrusion part.
  • the second body part may include a second main body part connected to the support part and a first main protrusion part disposed on an outer circumferential surface of the second main body part and protruding toward the first body part side.
  • the second body part may further include a second sub protrusion part protruding from an outer surface of the second main body part to be adjacent to the second main protrusion part.
  • the linear motion part may be inclined to support one end of the elastic part.
  • the first body portion may include a plurality of first main protrusions
  • the second body portion may include a second main protrusion that is alternated with the first main protrusion when the first body portion rotates.
  • Another aspect of the present invention may provide a grinding machine including a fixing assembly, a grinding blade fixed by the fixing assembly, a rotating shaft on which the fixing assembly is installed, and a driving unit connected to the rotating shaft.
  • a grinding machine including a grinding blade body portion, a grinding portion formed in the center of the grinding blade body portion, and a fixed protrusion into which the fixed assembly is inserted, and a fixed protrusion projecting from the inside of the insert into the fixed assembly side.
  • the fixed protrusion may include a first fixed protrusion protruding from the inside of the insertion part toward the fixing assembly and a second fixed protrusion protruding from the first fixed protrusion toward the fixing assembly.
  • Embodiments of the present invention can replace the grinding blade simply and quickly.
  • embodiments of the present invention it is possible to firmly fix the grinding blade.
  • the grinding blade of the embodiments of the present invention can be rotated by firmly fixed to the fixed assembly in use after fixed to the fixed assembly.
  • FIG. 1 is a perspective view showing a grinding machine according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the grinding blade shown in FIG.
  • FIG. 3 is an enlarged perspective view illustrating a portion A shown in FIG. 2.
  • FIG. 4 is a perspective view showing the fixing assembly shown in FIG. 1.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4.
  • FIG. 6 is a perspective view illustrating a method of operating the fixing assembly shown in FIG. 4.
  • FIG. 7 is a perspective view showing a method of operating the fixing assembly shown in FIG. 4.
  • FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7.
  • Best mode for carrying out the present invention is at least a portion protruding toward the grinding blade side, the first body portion is inserted into the grinding blade;
  • a second body part disposed to face the first body part, the second body part having at least a portion protruding toward the grinding blade side;
  • Supports one surface of the grinding blade is connected to the second body portion, disposed to face the first body portion and the grinding blade with the protruding portion of the first body portion in accordance with the rotation of the first body portion Gripping support;
  • a linear movement part connected to the rotary shaft of the grinding machine and the first body part and linearly moving through the second body part and the support part;
  • an elastic part disposed on an outer surface of the linear motion part and disposed between the linear motion part and the support part to provide a restoring force to the linear motion part during movement of the linear motion part.
  • FIG. 1 is a perspective view showing a grinding machine according to an embodiment of the present invention.
  • the grinding machine 10 may include a fixing assembly 100, a grinding blade 200, a rotating shaft 300, and a driving unit 400.
  • the fixing assembly 100 may be connected to the rotation shaft 300. In this case, the fixing assembly 100 may fix the grinding blade 200.
  • the grinding blade 200 may be used to cut or polish an external object.
  • the grinding blade 200 may be inserted into the fixing assembly 100 and fixed.
  • the rotating shaft 300 and the driving unit 400 may be connected to each other.
  • the rotation shaft 300 may be formed in various forms.
  • the end of the rotating shaft 300 may be formed in a polygonal shape or a cylindrical shape.
  • a part of the fixing assembly 100 may be formed to correspond to the shape of the rotating shaft 300 and may be combined with the rotating shaft 300.
  • the rotation shaft 300 may have a cylindrical shape, and a male screw may be formed on the outer surface of the rotation shaft 300.
  • the shape of the rotation shaft 300 may be formed in a cylindrical shape, and may be coupled to the fixed assembly 100 through a separate member.
  • the driving unit 400 may be formed in various forms.
  • the driving unit 400 may include a motor.
  • the driving unit 400 may include a motor, a gear assembly, and a speed reducer.
  • the driving unit 400 is not limited to the above, and may include all devices and all structures connected to the rotating shaft 300 to rotate the rotating shaft 300.
  • the grinding machine 10 may include a power supply unit (not shown) for supplying power to the driving unit 400 in addition to the above configuration.
  • the grinding machine 10 may include a control unit (not shown) for controlling the driving unit 400, a case (not shown) surrounding the driving unit 400, a protective cover (not shown) surrounding the grinding blade 200, and the like.
  • the grinding machine 10 may be provided with various configurations that are actually used in addition to the above configuration.
  • the grinding machine 10 can increase or enhance user convenience by being able to fix or separate the grinding blade 200 through a simple structure.
  • the grinding machine 10 can be securely used to secure the grinding blade 200 can ensure the stability of the user.
  • FIG. 2 is a perspective view showing the grinding blade shown in FIG.
  • FIG. 3 is an enlarged perspective view illustrating a portion A shown in FIG. 2.
  • the grinding blade 200 may include a grinding blade body 210, an insertion unit 220, and a fixed protrusion 230.
  • the grinder blade body 210 may be formed of a material capable of grinding an object. At this time, the grinding blade body 210 may be formed in an annular shape.
  • Insertion unit 220 may be disposed inside the grinding blade body (210).
  • the insertion part 220 may be formed of the same material as the grinding blade body 210 or may be formed of a different material from the grinding blade body 210.
  • the inserting part 220 may include at least one of metal, paper, and fiber.
  • the inserting portion 220 is not limited to the above material, and may include a material having a certain degree of hardness.
  • the insertion unit 220 may form the same plane as the grinding blade body 210.
  • the insertion part 220 may be formed to be inserted or protruded from one surface of the grinding blade body 210.
  • the insertion part 220 will be described in detail with a focus on the case where the grinding blade body 210 forms the same plane.
  • An insertion hole 221 may be formed in the insertion part 220 such that a fixing assembly (not shown) is inserted.
  • the insertion hole 221 may be formed to correspond to the appearance of the fixing assembly.
  • the fixed protrusion 230 may be disposed inside the insertion unit 220.
  • the fixed protrusion 230 may be formed to protrude from the inner circumferential surface of the insertion hole 221 into the insertion hole 221.
  • the fixed protrusion 230 may be disposed on the same plane as the grinding blade body 210.
  • the fixed protrusion 230 may be provided in plurality.
  • the plurality of fixing protrusions 230 may be arranged to be spaced apart from each other along the inner circumferential surface of the insertion hole 221.
  • the inner circumferential surface of the insertion hole 221 may be formed in an uneven shape.
  • the fixing protrusion 230 may prevent the fixing assembly from rotating after the fixing assembly is inserted into the insertion hole 221.
  • the fixed protrusion 230 may be formed in various forms.
  • the fixed protrusion 230 may have a polygonal shape such as a triangle or a quadrangle in the plan view of the fixed protrusion 230.
  • Each fixed protrusion 230 may include a first fixed protrusion 231 and a second fixed protrusion 232.
  • the first fixed protrusion 231 may protrude from the inner circumferential surface of the insertion hole 221 into the insertion hole 221.
  • the first fixed protrusion 231 may be disposed in the insertion hole 221 to be inserted into a fixed assembly (not shown), and may prevent rotation of the grinding blade body 210.
  • the second fixed protrusion 232 may be connected to the end of the first fixed protrusion 231.
  • the second fixed protrusion 232 may protrude from the end of the first fixed protrusion 231 to the inner side of the insertion hole 221.
  • a plurality of second fixed protrusions 232 may be provided, and the plurality of second fixed protrusions 232 may be spaced apart from each other.
  • two second fixed protrusions 232 may be provided so as to face each other on both ends of the first fixed protrusion 231.
  • a part of the fixing assembly may be inserted between the two second fixing protrusions 232.
  • a second sub protrusion (not shown) may be disposed between the second fixed protrusions 232.
  • the grinding blade 200 can be installed firmly fixed by preventing the rotation after installation.
  • the grinding blade 200 can be accurately installed in the fixed assembly to prevent the vibration and the like that may occur due to the relative movement with the fixed assembly when the grinding machine (not shown).
  • FIG. 4 is a perspective view showing the fixing assembly shown in FIG. 1.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4.
  • the fixing assembly 100 may include a first body part 110, a second body part 120, a support part 130, a linear movement part 140, and an elastic part 150. Can be.
  • the first body part 110 may include a first main body 111, a first main protrusion 112, and a first sub protrusion 113.
  • the first main body part 111 may be formed in a circular shape, and may be formed in a plate shape and connected to the linear motion part 140.
  • the first main body 111 and the linear motion unit 140 may be connected through welding or connected through a screw, a bolt, or the like.
  • the first main protrusion 112 may be disposed on an outer circumferential surface of the first main body 111 to protrude from the first main body 111 to the second body 120.
  • the length of the first main protrusion 112 may be greater than the thickness of the first main body 111 to protrude from the bottom of the first main body 111 to the second body 120.
  • the first main protrusion 112 may be integrally formed with the first main body 111.
  • the first main protrusion 112 and the first main body 111 may be manufactured through press molding.
  • the first main protrusion 112 may be provided in plurality, and the plurality of first main protrusions 112 may be arranged to be spaced apart from each other along the outer circumferential surface of the first main body 111. In this case, an inserted portion may be formed between the first main protrusions 112.
  • the first sub protrusion 113 may protrude from the outer circumferential surface of the first main body 111.
  • the length of the first sub protrusion 113 may be formed to be the same as or similar to the thickness of the first main body 111.
  • a plurality of first sub-projections 113 may be provided, and the plurality of first sub-projections 113 may be spaced apart from each other.
  • each of the first sub protrusions 113 may be disposed between the first main protrusions 112 adjacent to each other.
  • the second body part 120 may include a second main body part 121, a second main protrusion part 122, and a second sub protrusion part 123.
  • the second main body 121 may be formed in a circular plate shape. In this case, a hole may be formed in the second main body 121 so that the linear movement part 140 is inserted.
  • the second main protrusion 122 may protrude outward from an outer circumferential surface of the second main body 121.
  • a plurality of second main protrusions 122 may be provided, and the plurality of second main protrusions 122 may be arranged to be spaced apart from each other.
  • the length of the second main protrusion 122 may be equal to or greater than the thickness of the second main body 121.
  • the adjacent second main protrusions 122 may be formed to be drawn in.
  • the second sub protrusion 123 may be disposed in this portion.
  • the second sub protrusion 123 may protrude from the outer circumferential surface of the second main body 121.
  • a plurality of second sub protrusions 123 may be provided, and the plurality of second sub protrusions 123 may be arranged to be spaced apart from each other.
  • the length of the second sub protrusion 123 may be formed to be the same as the thickness of the second main body 121.
  • the second sub protrusion 123 may be disposed between adjacent second main protrusions 122.
  • the support part 130 may be connected to the second body part 120 and may be installed to penetrate the linear motion part 140.
  • the support 130 may be formed in a plate shape.
  • the second support part 130 may be integrally formed with the second body part 120 or may be separately formed and combined.
  • the second support part 130 and the second body part 120 may be connected by welding or connected through a screw, a bolt, or the like.
  • the second support part 130 and the second body part 120 are formed separately from each other for convenience of description and will be described in detail with reference to the case where they are coupled by welding.
  • the linear motion part 140 may be disposed to pass through the support part 130 and the second body part 120 to be connected to the first main body part 111. At this time, a groove may be formed in the linear motion part 140 so that the rotating shaft (not shown) of the grinding machine 10 is inserted. In this case, a female screw may be formed in the groove, and a male screw may be formed in the rotating shaft to be coupled to each other.
  • the linear motion part 140 may include a linear motion body part 141 moving through the second main body part 121.
  • the linear motion part 140 may include a locking part 142 connected to the linear motion body part 141.
  • the locking unit 142 as described above may support one end of the elastic unit 150.
  • the cross-sectional area of at least a portion of the locking portion 142 perpendicular to the longitudinal direction of the linear motion body 141 may be formed larger than the cross-sectional area of the linear motion body 141.
  • the locking portion 142 may be formed in a conical shape, or may be formed in a cylindrical, polygonal shape.
  • the locking unit 142 will be described in detail with reference to a case where the cone is formed in a conical shape.
  • the elastic part 150 may have a linear motion body 141 inserted therein and may be disposed between the locking part 142 and the support part 130. In this case, the elastic part 150 may provide a restoring force to the linear motion body 141 during the linear motion of the linear motion body 141.
  • FIG. 6 is a perspective view illustrating a method of operating the fixing assembly shown in FIG. 4.
  • 7 is a perspective view showing a method of operating the fixing assembly shown in FIG. 4.
  • FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7.
  • the fixing assembly 100 may be used to fix the grinding blade 200. Specifically, after the fixing assembly 100 is installed in the grinding machine 10, the grinding blade 200 may be fixed to the fixing assembly 100. In another embodiment, the grinding assembly 200 may be installed in the fixing assembly 100, and then the fixing assembly 100 may be installed in the grinding machine 10.
  • the first body 110 and the second body 120 may be inserted into the insertion hole 221.
  • the first main protrusion 112 and the second main protrusion 122 may be disposed to face each other.
  • the first main protrusion 112 may be supported by the second main protrusion 122.
  • the grinding blade 200 When the first body part 110 and the second body part 120 are inserted into the grinding blade 200, one surface of the grinding blade 200 may contact the support 130.
  • the first fixed protrusion 231 may be inserted between the second main protrusion 122.
  • a second sub protrusion 123 may be inserted between the second fixed protrusion 232.
  • the elastic portion 150 may provide an elastic force to the linear motion body portion 141.
  • the elastic part 150 may exert the locking part 142 and move the linear motion body 141 toward the locking part 142.
  • the first main body 111 connected to the linear motion body 141 also moves along with the linear motion body 141, and the first main protrusion 112 enters between the second main protrusion 122. Can be.
  • the first main protrusion 112 may contact the other surface of the grinding blade 200.
  • the second sub protrusion 123 may provide a predetermined amount of friction force to the first main protrusion 112 by contacting the inner surface of the first main protrusion 112.
  • the elastic unit 150 may be applied to the engaging portion 142 by the force continuously so that the first main protrusion 112 can force the grinding blade 200 with a sufficient force.
  • One surface of the grinding blade 200 is supported by the support 130, the other surface of the grinding blade 200 may be exerted by the first main protrusion (112). In this case, the grinding blade 200 may be fixed. In addition, the grinding blade 200 may not rotate differently from the rotation of the fixing assembly 100 by the second main protrusion 122 and the second sub protrusion 123.
  • the first sub protrusion 113 may be arranged to face the second main protrusion 122.
  • the first sub-projection part 113 may prevent the first main body part 111 from moving toward the second main body part 121 by contacting the second main protrusion part 122.
  • the linear motion body 141 may space the first main body 111 and the second main body 121 while linearly moving.
  • the elastic part 150 is compressed in accordance with the movement of the linear motion body 141 to store the elastic force and then provide a restoring force to the linear motion body 141 when fixing the grinding blade 200 as described above. Can be.
  • the first main protrusion 112 may be drawn out from between the adjacent second main protrusions 122.
  • the first main protrusion 112 is drawn out between the adjacent second main protrusions 122, the first main body 111, the linear motion body 141, the locking part 142, and the second main body At least one of the part 121 and the support 130 may be rotated.
  • the locking unit 142 will be rotated to describe the case where the first main body 111 and the linear motion body 141 are rotated in detail.
  • the first main protrusion part 112 may rotate together with the first main body part 111. have.
  • the user may stop the rotation and remove the force applied to the catching part 142.
  • the elastic part 150 may provide a restoring force to the locking part 142 to linearly move the linear body 141.
  • the first main body 111 and the first main protrusion 112 linearly move like the linear motion body 141, and the first main protrusion 112 may contact the second main protrusion 122. Can be.
  • the fixing assembly 100 may release the restraint of the grinding blade 200.
  • the fixing assembly 100 may fix the grinding blade 200 through a simple structure and method.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

La présente invention concerne un ensemble de fixation et une meuleuse. La présente invention comprend : une première partie corps insérée dans une lame de meuleuse ; une seconde partie corps disposée face à la première partie corps ; une partie de support raccordée à la seconde partie corps et saisissant la lame de meuleuse conjointement avec la première partie corps en fonction de la rotation de la première partie corps ; une partie de déplacement linéaire raccordée à l'arbre de rotation de la meuleuse et à la première partie corps et se déplaçant linéairement en passant à travers la seconde partie corps et la partie de support ; et une partie élastique disposée, sur la surface extérieure de la partie de déplacement linéaire, entre la partie de déplacement linéaire et la partie de support pour fournir une force de rappel à la partie de déplacement linéaire pendant le déplacement de la partie de déplacement linéaire.
PCT/KR2018/006542 2017-06-09 2018-06-08 Ensemble de fixation et meuleuse comprenant celui-ci Ceased WO2018226068A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170072720A KR101838740B1 (ko) 2017-06-09 2017-06-09 고정 어셈블리 및 이를 포함하는 연삭기
KR10-2017-0072720 2017-06-09

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Publication Number Publication Date
WO2018226068A1 true WO2018226068A1 (fr) 2018-12-13

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PCT/KR2018/006542 Ceased WO2018226068A1 (fr) 2017-06-09 2018-06-08 Ensemble de fixation et meuleuse comprenant celui-ci

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KR (1) KR101838740B1 (fr)
WO (1) WO2018226068A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12179309B2 (en) 2021-03-18 2024-12-31 Techtronic Cordless Gp Mandrel and accessory for rotary tool
USD1102495S1 (en) 2022-03-16 2025-11-18 Techtronic Cordless Gp Mandrel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200024384A (ko) 2018-08-27 2020-03-09 김점용 핸드 그라인더의 디스크 고정장치
KR20240027430A (ko) 2022-08-23 2024-03-04 강형주 콘크리트 구조물의 모서리부 연삭장치

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KR20100008489A (ko) * 2008-07-16 2010-01-26 김경진 핸드 그라인더의 디스크홀더 착탈장치
KR101149586B1 (ko) * 2011-07-13 2012-05-29 김규철 황삭 가공용 원판 고정 모듈
KR101258769B1 (ko) * 2010-09-17 2013-04-29 주식회사 포스코 그라인더 휠 고정장치
KR101310756B1 (ko) * 2012-03-21 2013-09-25 이기천 그라인더의 회전날 조립체
KR20140002623U (ko) * 2012-10-25 2014-05-07 현대중공업 주식회사 그라인더 날세우기용 디스크 고정지그

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100008489A (ko) * 2008-07-16 2010-01-26 김경진 핸드 그라인더의 디스크홀더 착탈장치
KR101258769B1 (ko) * 2010-09-17 2013-04-29 주식회사 포스코 그라인더 휠 고정장치
KR101149586B1 (ko) * 2011-07-13 2012-05-29 김규철 황삭 가공용 원판 고정 모듈
KR101310756B1 (ko) * 2012-03-21 2013-09-25 이기천 그라인더의 회전날 조립체
KR20140002623U (ko) * 2012-10-25 2014-05-07 현대중공업 주식회사 그라인더 날세우기용 디스크 고정지그

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12179309B2 (en) 2021-03-18 2024-12-31 Techtronic Cordless Gp Mandrel and accessory for rotary tool
USD1102495S1 (en) 2022-03-16 2025-11-18 Techtronic Cordless Gp Mandrel

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