WO2017126011A1 - 被加工物の加工方法、研磨機用ブラシ及び工具ホルダ - Google Patents
被加工物の加工方法、研磨機用ブラシ及び工具ホルダ Download PDFInfo
- Publication number
- WO2017126011A1 WO2017126011A1 PCT/JP2016/051310 JP2016051310W WO2017126011A1 WO 2017126011 A1 WO2017126011 A1 WO 2017126011A1 JP 2016051310 W JP2016051310 W JP 2016051310W WO 2017126011 A1 WO2017126011 A1 WO 2017126011A1
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- WIPO (PCT)
- Prior art keywords
- workpiece
- brush
- grindstone
- contact
- tool
- Prior art date
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Classifications
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- 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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
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- 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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on plane surfaces
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- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
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- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
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- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/145—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face having a brush-like working surface
Definitions
- the present invention relates to a processing method for a workpiece that performs deburring, polishing, etc. of the workpiece while rotating the brush-shaped grindstone with the force generated by the relative movement between the brush-shaped grindstone and the workpiece as a driving force, and
- the present invention relates to a brush for a polishing machine and a tool holder used therefor.
- Kele is known as one of power transmission mechanisms in machine tools such as lathes and grinders (for example, Patent Document 1). This is intended to transmit the driving force of the rotating object to the rotated object by connecting and fixing the rotating object and the rotated object respectively with a scrape.
- a lathe is a machine tool that performs cutting, polishing, and deburring by rotating a workpiece (hereinafter also referred to as “workpiece”) while bringing a tool into contact therewith.
- workpiece hereinafter also referred to as “workpiece”
- the tool is fixed to the tool gripping part and does not rotate. Therefore, a rotary tool is known as a technique for rotating the tool to prevent the tool from being melted by frictional heat (for example, Patent Document 2). This is a technique for rotating the tool by transmitting the rotational driving force of the workpiece to the tool by frictional resistance and releasing the heat of the tool.
- JP 2009-274166 A Japanese Patent Laid-Open No. 10-315010
- an object of the present invention is to provide a machine tool capable of machining a workpiece by bringing the tool and the workpiece into contact with each other while making no relative power, and having the power to rotate the tool directly. It is an object of the present invention to provide a processing method capable of efficiently deburring and polishing a workpiece and prolonging the life of a brush to be used.
- the present invention rotates a brush-like grindstone by moving the brush-like grindstone and the workpiece relative to each other while contacting the brush-like grindstone and the workpiece in a machine tool having no power to rotate the tool.
- the present invention relates to a processing method for processing a workpiece.
- the present invention further includes a portion where the driving force is transmitted by contacting the workpiece on the tip surface of the brush-like grindstone, and a portion where a deburring action is generated by contacting the edge portion of the workpiece.
- a portion where the driving force is transmitted by contacting the workpiece on the tip surface of the brush-like grindstone and a portion where a deburring action is generated by contacting the edge portion of the workpiece.
- the relative motion is a motion of a workpiece.
- the motion of the workpiece is a rotational motion.
- the present invention further rotates the brush-shaped grindstone in the same direction as the rotation direction of the workpiece by bringing the brush-shaped grindstone into contact with the workpiece from the end surface of the workpiece orthogonal to the rotation axis of the workpiece. It is preferable.
- the present invention further rotates the brush-shaped grindstone in the direction opposite to the rotation direction of the workpiece by bringing the brush-shaped grindstone into contact with the workpiece from the end surface of the workpiece orthogonal to the rotation axis of the workpiece. It is preferable.
- the present invention further provides a work to be performed on the brush-shaped grindstone when a straight line that passes through the center of rotation on the tip surface of the brush-shaped grindstone and is parallel to the direction of the force that the brush-shaped grindstone receives from the workpiece is used as the axis of symmetry. It is preferable to bring the brush-shaped grindstone into contact with the workpiece so that the contact area with the workpiece is non-axisymmetric.
- the motion of the workpiece is a linear motion.
- the relative motion is a revolving motion of a brush-like grindstone.
- the relative motion is a linear motion of a brush-like grindstone.
- the present invention relates to a brush-shaped grindstone having a linear abrasive and a holder for holding the linear abrasive, and a rotary grip for gripping the brush-shaped grindstone in a rotatable state by supporting the rear end side of the holder. It is related with the brush for grinders characterized by providing the part and the fixing jig for fixing a rotation holding part to a machine tool connected with a rotation holding part.
- the present invention is a tool holder comprising a rotary gripping part for gripping a tool in a rotatable state and a fixing jig for fixing the rotary gripping part to a machine tool, wherein the fixing jig is an axis position adjusting part. And a fixed part fixed to the machine tool, the rotary gripping part is connected to the shaft position adjusting part, the shaft position adjusting part is connected to the fixed part via the connecting part, and the shaft position adjusting part is The present invention relates to a tool holder that is rotatable about the connecting portion and capable of adjusting the position of a rotating shaft of a tool in contact with a workpiece by an axial position adjusting portion.
- the workpiece is processed while rotating the brush-like grindstone using the force generated by the relative movement between the workpiece and the brush-like grindstone as a driving force, thereby obtaining the brush-like grindstone and the workpiece.
- the contact point with the workpiece is not constant, and the effects of deburring and polishing can be sufficiently obtained. Further, it is possible to prevent only a part of the brush from being extremely worn, and it is possible to extend the life of the brush.
- FIG. 2B is a cross-sectional view showing a state where FIG. 2B is cut along the line XX. It is a perspective view of the brush for polishers concerning an embodiment of the invention. It is a perspective view at the time of seeing the brush for polishers concerning an embodiment of the invention from the back side.
- 4 is a schematic diagram showing the force that the brush-like grindstone 1 receives from the workpiece 20.
- FIG. It is a schematic diagram showing the cutting amount.
- FIG. 1 is a perspective view showing an example of a brush for a polishing machine according to an embodiment of the present invention.
- Fig.2 (a) is a side view which shows an example of the brush for polishers concerning embodiment of this invention, and is a figure showing the internal structure of a rotation holding part.
- FIG.2 (b) is the figure which looked at the brush for polishers concerning embodiment of this invention from the opening side of the holder.
- FIG. 3 is a cross-sectional view showing a state where FIG. 2B is cut along the line XX.
- the brush 12 for a polishing machine is composed of a brush-like grindstone 1, a rotary gripping portion 7, and a fixing jig 8.
- the brush-like grindstone 1 includes a linear abrasive 2, a holder 3, and a gripped portion 6.
- the fixing jig 8 includes an axial position adjusting unit 9 and a fixed part 10.
- the brush-like grindstone 1 has a structure in which the base ends of a plurality of linear abrasives 2 are held by a cylindrical holder 3.
- the linear abrasive 2 is not particularly limited as long as it is a material capable of polishing a workpiece, that is, a material having higher hardness and brittleness than the workpiece. It can be appropriately selected depending on the like. Specifically, for example, a silicone resin, a urethane resin, an epoxy resin, a phenol resin, and a polyimide resin are collected on an aggregate yarn in which long fibers such as alumina long fiber, glass long fiber, silicon carbide long fiber, or boron long fiber are assembled.
- the long fibers forming the aggregate yarn are preferably alumina long fibers or silicon carbide long fibers because of their excellent abrasiveness to these metals.
- the aggregate yarn may be formed using two or more types of long fibers.
- the cylindrical holder 3 is open at one end in the axial direction. As shown in FIG. 3, an insertion hole 4 is provided at the end of the holder 3 opposite to the opening side so as to pass through the proximal end side of the linear abrasive 2.
- the linear abrasive 2 is held by the holder 3 by inserting the base end side of the linear abrasive 2 into the insertion hole 4 and fixing it with an adhesive.
- a support shaft 5 is provided inside the holder 3 so as to extend along the rotation axis from the end opposite to the opening side.
- a plurality of linear abrasives 2 are formed on the inner wall of the holder 3 around the support shaft 5. It is provided along the circumference at regular intervals.
- the brush-like grindstone 1 of the present embodiment is capable of discharging chips efficiently by providing a certain space between the plurality of linear abrasives 2, and also has an excellent heat dissipation effect. ing. Therefore, deburring and polishing can be performed with high efficiency and high accuracy.
- a fitting groove is provided at a substantially central part when the end of the holder 3 opposite to the opening side is viewed from the axial direction, and one end of the gripped part 6 is fitted into the fitting groove. Yes.
- An internal thread groove is provided at the end of the gripped portion 6 opposite to the fitting portion with the holder 3.
- the gripping part 6 is inserted into a shaft insertion hole provided in the rotary gripping part 7, and the female thread groove of the gripping part 6 is screwed with the bolt, so that the rotary gripping part 7 rotates the brush-like grindstone 1. Hold it as possible.
- the to-be-gripped part 6 and the holder 3 are formed so that attachment or detachment is possible, the to-be-gripped part 6 and the holder 3 may be provided integrally, for example.
- Rotational gripping portion 7 is not particularly limited as long as it can grip brush-like grindstone 1 rotatably.
- a bearing For example, a ball bearing, a roller bearing, a tapered roller bearing, or a needle bearing can be used.
- a ball bearing is preferable from the viewpoint of low rolling resistance and suitable for high-speed rotation.
- a ball bearing is used as the rotary grip portion 7. It is preferable to have a plurality of bearings with respect to the shaft.
- the brush-like grindstone 1 when the brush-like grindstone 1 is rotatably held by the rotary gripping portion 7, when the brush-like grindstone 1 and the workpiece 20 are brought into contact with each other while being relatively moved, The brush-like grindstone 1 can be rotated using the force generated on the contact surface with the workpiece 20 as a driving force.
- the brush-shaped grindstone 1 when the brush-shaped grindstone 1 is brought into contact with the workpiece 20 that moves such as rotating, the brush-shaped grindstone 1 can be rotated by using the kinetic energy of the workpiece as a driving force. Therefore, when the polishing machine brush 12 of the present embodiment is used as a tool such as a lathe, the brush-like grindstone 1 contacts the work piece while rotating by the kinetic energy of the work piece.
- the contact point with the workpiece is not constant, and the effects of deburring and polishing can be sufficiently obtained. Further, when the brush-like grindstone 1 comes into contact with the rotating workpiece, slip occurs at the contact point, and when the brush-like grindstone is rotating, the rotation ratio between the brush-like grindstone and the workpiece is 1. Since it is not 1: 1, an excellent brush effect can be obtained.
- the rotary gripping portion 7 is provided with two screw holes at a point-symmetrical position around the shaft portion insertion hole, and is connected to the shaft position adjusting portion 9 by a screw.
- the shaft position adjusting unit 9 is connected to the fixed portion 10 and can be rotated about the connecting portion as an axis. By moving the shaft position adjusting unit 9, the contact location between the linear abrasive 2 and the workpiece can be easily adjusted. An excellent polishing effect can be obtained by appropriately adjusting the contact point between the linear abrasive 2 and the workpiece according to the types of the linear abrasive and the workpiece, the purpose of processing, and the like.
- the fixed part 10 is fixed by a tool holding part 21 of a machine tool.
- the fixed portion 10 is formed in a substantially rectangular parallelepiped shape, but is not particularly limited as long as it can be fixed by a tool holder of a machine tool.
- FIG. 4 is a perspective view of a brush for a polishing machine according to another embodiment of the present invention, which is different from the brush for a polishing machine according to the embodiment of the present invention described above.
- FIG. 5 is a perspective view of the polishing machine brush shown in FIG. 4 when viewed from the back side.
- the brush for a polishing machine according to the present embodiment does not have an axial position adjusting unit, and the rotary gripping unit 7 is connected to a fixing jig 8.
- the fixing jig 8 includes a fixed part, and the fixed part is fixed by a tool holding part of a machine tool.
- Adjustment of the contact point between the linear abrasive 2 and the workpiece is performed by adjusting the position where the fixing jig 8 is fixed to the tool holding part of the machine tool, or by moving the tool holding part of the machine tool. .
- the brush-shaped grindstone 1 is rotatably held by the rotary gripping portion 7, when the brush-shaped grindstone 1 and the workpiece 20 are brought into contact with each other while being relatively moved, the workpiece 20 in the brush-shaped grindstone 1 and It is possible to rotate the brush-like grindstone 1 using the force generated on the contact surface as a driving force.
- the brush-shaped grindstone 1 can be rotated using the kinetic energy of the workpiece as a driving force.
- the tool holder 11 is a part constituting the polishing machine brush 12 shown in FIG. 1, and is a fixing jig 8 including a rotary gripping portion 7, an axial position adjusting portion 9 and a fixed portion 10. And.
- the configuration, function, and the like of each part are as described in the section of the brush for a polishing machine.
- the tool holder 11 holds the polishing machine brush.
- a tool such as a cutting tool is held instead of the polishing machine brush.
- the first embodiment according to the machining method of the present invention is a machine tool such as a lathe that does not have power to rotate a tool, and the workpiece is rotated using the brush 12 for a polishing machine as a polishing tool. It is a method of processing a workpiece while.
- the brush-shaped grindstone 1 is rotated by the rotational force of the workpiece 20 by bringing the brush-shaped grindstone 1 into contact with the end surface of the workpiece from the direction along the rotation axis of the workpiece 20. Process. Since the contact point with the workpiece 20 in the brush-shaped grindstone 1 does not become constant when the brush-shaped grindstone 1 contacts the workpiece 20 while rotating, a sufficient deburring and polishing effect can be obtained. In addition, it is possible to prevent only a part of the brush-like grindstone 1 from being excessively worn and to prolong the life of the brush-like grindstone 1.
- the number of rotations of the workpiece 20 is not particularly limited, but is preferably 50 rpm or more, and more preferably 1000 rpm or more.
- FIG. 6 is a schematic diagram showing the force that the brush-shaped grindstone 1 receives from the workpiece 20 when the brush-shaped grindstone 1 is brought into contact with the end surface from the end surface 20 a of the workpiece orthogonal to the rotation axis of the workpiece 20.
- Both the workpiece 20 and the brush-like grindstone 1 have a diameter of 20 mm, and the length of the line segment connecting the respective rotation centers of the workpiece 20 and the brush-like grindstone 1 is 10 mm.
- the wrap rate is 100%.
- the lapping rate is the length of the overlap between the workpiece and the brush-like grindstone on the straight line including the rotation center of the workpiece and the rotation center of the brush-like grindstone. The value divided by the radius.
- the workpiece 20 is rotating clockwise, and at the point P ⁇ b> 1, the brush-like grindstone 1 receives a force F ⁇ b> 1 from the workpiece 20 in the tangential direction of the end surface of the workpiece 20.
- the force F1 is decomposed into the tangential direction and the normal direction of the outer periphery of the brush-like grindstone 1
- the force in the tangential direction can be expressed as the force Ft1
- the force in the normal direction can be expressed as the force Fn1.
- the brush-like grindstone 1 receives the force F2 from the workpiece 20 at the point P2.
- the force in the tangential direction can be expressed as the force Ft2
- the force in the normal direction can be expressed as the force Fn2.
- the force that the brush-like grindstone 1 receives from the workpiece is zero.
- a resistance force Fr generated when the brush-shaped grindstone 1 rides on the workpiece 20 acts on the brush-shaped grindstone 1 in a direction opposite to the force Ft2.
- the tangential force Ft2 received from the workpiece 20 by the brush-like grindstone 1 exceeds the resistance force Fr at the point P2, that is, Ft2.
- the force acts so as to rotate the brush-like grindstone 1 at the point P2.
- the resistance force Fr generated when the brush-like grindstone 1 rides on the workpiece 20 can be adjusted mainly by the cutting amount of the brush-like grindstone 1 into the workpiece 20. If the cutting depth increases, the resistance force Fr also increases.
- the amount of cutting is the state where the tip of the brush-like grindstone is in contact with the workpiece without applying stress to the brush, and when the brush-like grindstone is further pressed against the workpiece, The amount of movement of the tip of the brush-like grindstone.
- FIG. 7 is a schematic view showing a state in which the tip surface of the brush-like grindstone is brought into contact with the workpiece, and then the brush-like grindstone is further pressed against the workpiece.
- the length D corresponds to the cutting amount.
- FIG. 8 is a schematic diagram showing a portion where the deburring action occurs in the brush-like grindstone 1 and a portion where the driving force is transmitted from the workpiece 20.
- the diameter of the workpiece 20 and the diameter of the brush-like grindstone 1 are the same.
- the arrow in the figure represents the direction of rotation, the workpiece 20 rotates clockwise, and the brush-like grindstone 1 rotates counterclockwise.
- the part where the deburring action occurs is the point A where the brush-like grindstone 1 rides on the workpiece 20, and the part where the driving force is transmitted from the workpiece 20 to the brush-like grindstone 1 is a
- the point where the brush-like grindstone 1 is in contact with the end surface 20a of the workpiece, such as the point, the point b, and the point c.
- FIG. 9 shows the magnitude of the force for rotating the brush-shaped grindstone 1 in the same direction as the rotation direction of the workpiece 20 and the magnitude of the force for rotating the brush-shaped grindstone 1 in the direction opposite to the rotation direction of the workpiece 20. It is a schematic diagram which shows distribution of thickness. In FIG. 9, the diameter of the workpiece 20 and the diameter of the brush-like grindstone are the same, and the workpiece 20 is rotating clockwise. A broken-line curve 31 is an image curve indicating the direction and magnitude distribution of the force acting on the brush-like grindstone 1.
- the curve 31 shows a broken line on the left side of the circumference when a force acts to rotate the brush-like grindstone 1 in the direction A at each point on the circumference connecting P1 and P2 of the brush-like grindstone 1.
- a broken line is drawn on the right side of the circumference.
- the curve 31 has a curve at a position further away from the circumference of the brush-like grindstone 1 in the horizontal direction as the force to rotate in the A direction or the force to rotate in the B direction increases. It is drawn.
- the brush-like grindstone 1 When the brush-like grindstone 1 is brought into contact with the workpiece 20 from the end surface 20 a of the workpiece orthogonal to the rotation axis of the workpiece 20, the brush-like grindstone 1 rotates in the same direction as the rotation direction of the workpiece 20. Whether the workpiece 20 rotates in the direction opposite to the rotation direction depends on the magnitude relationship between the diameter of the workpiece 20 and the diameter of the brush-like grindstone 1, the lapping rate, and the cutting depth.
- the brush-like grindstone 1 when the diameter of the workpiece 20 is the same as the diameter of the brush-like grindstone 1 and the lapping rate is less than 100%, the brush-like grindstone 1 tries to rotate in the direction opposite to the rotation direction of the workpiece 20, and the lap When the rate is 100%, the brush-like grindstone 1 does not rotate. When the lapping rate exceeds 100%, the brush-like grindstone 1 tries to rotate in the same direction as the rotation direction of the workpiece 20.
- FIG. 10 shows that the workpiece 20 and the brush-like grindstone 1 have the same diameter, the workpiece 20 is rotated clockwise, the lap ratio is 50%, and the workpiece perpendicular to the rotation axis of the workpiece 20 is shown.
- the workpiece 20 and the brush-like grindstone 1 have the same diameter, the workpiece 20 is rotated clockwise, and the lap ratio is 58.58%, which is orthogonal to the rotation axis of the workpiece 20.
- the lap ratio is 58.58%, which is orthogonal to the rotation axis of the workpiece 20.
- the brush-like grindstone 1 is subjected to a force that causes the workpiece 20 to rotate in the counterclockwise direction (the direction opposite to the rotation direction of the workpiece 20). If this force is greater than the sum of the resistance forces Fr generated when the brush-shaped grindstone 1 rides on the workpiece 20, the brush-shaped grindstone 1 rotates counterclockwise.
- the number of revolutions of the brush-like grindstone 1 can be controlled by the number of revolutions of the workpiece and the cutting depth.
- FIG. 12 the workpiece 20 and the brush-like grindstone 1 have the same diameter, the workpiece 20 is rotated clockwise, the lapping rate is 150%, and the workpiece perpendicular to the rotation axis of the workpiece 20 is shown.
- the brush-like grindstone 1 is subjected to a force to rotate the workpiece 20 in the clockwise direction (the same direction as the workpiece rotation direction) by the rotation of the workpiece 20. If this force is greater than the sum of the resistance forces Fr generated when the brush-shaped grindstone 1 rides on the workpiece 20, the brush-shaped grindstone 1 rotates in the clockwise direction.
- the number of revolutions of the brush-like grindstone 1 can be controlled by the number of revolutions of the workpiece 20 and the cutting depth.
- FIG. 13 is a schematic diagram when the state in which the brush-like grindstone 1 is in contact with the side surface 20b of the workpiece is viewed from the side surface side.
- the shape of the workpiece 20 to be processed is not particularly limited.
- a cylindrical workpiece 20 can be used as shown in FIG.
- the workpiece 20 rotates about the rotation axis W.
- the tip surface of the brush-like grindstone 1 and the side surface 20b of the workpiece are not parallel (that is, the tip surface of the brush-like grindstone 1 and the tangent plane of the side surface 20b of the workpiece are not parallel).
- the work piece 20 is rotated in the near side direction or the depth side direction, and in the front end direction or the depth side direction on the left end portion of the tip surface of the brush-like grindstone 1.
- the brush-like grindstone 1 rotates.
- the side surface 20b can be polished over a wide range by changing the position of the side surface 20b of the workpiece 20 in contact with the brush-like grindstone 1.
- FIG. 14 is a schematic view when the state in which the brush-like grindstone 1 is brought into contact with the side surface 20b of the workpiece is viewed from the end surface side of the workpiece.
- the workpiece 20 has a cylindrical shape and rotates about the rotation axis W.
- the tip surface of the brush-like grindstone 1 and the side surface 20 b of the workpiece are parallel (that is, the tip surface of the brush-like grindstone 1 and the tangent plane of the side surface 20 b of the workpiece are parallel).
- the tip end surface of the brush-shaped grindstone 1 is in contact with the side surface 20b of the workpiece and the edge portion of the end surface 20a, and the end portion closest to the tip surface of the brush-shaped grindstone 1 is the workpiece 20. Only a part of the tip surface is in contact with the side surface 20b of the workpiece so as not to contact with the workpiece.
- the workpiece 20 rotates clockwise, and the kinetic energy is given in the right direction to the tip surface of the brush-like grindstone 1 that is in contact with the side surface 20 b of the workpiece, whereby the brush The shaped whetstone 1 rotates.
- the portion where the deburring action occurs is a point where the brush-like grindstone 1 rides on the side surface 20b of the workpiece
- the portion where the driving force is transmitted from the object 20 to the brush-shaped grindstone 1 is a point where the brush-shaped grindstone 1 is in contact with the side surface 20b of the workpiece.
- the tip surface of the brush-like grindstone 1 and the side surface 20b of the workpiece are parallel (that is, the tip surface of the brush-like grindstone 1 and the side surface of the workpiece).
- the brush-like grindstone 1 is brought into contact with the side surface 20b of the workpiece, the entire front end surface of the brush-like grindstone 1 is in contact with the side surface 20b.
- the brush-like grindstone 1 does not rotate. In order for the brush-shaped grindstone 1 to rotate, as shown in FIG. 13 and FIG.
- the tip surface of the brush-shaped grindstone 1 and the side surface 20b of the workpiece are not in parallel with each other, or Even if the tip surface of the grindstone 1 and the side surface 20b of the workpiece are in contact with each other, only a part of the tip surface of the brush-shaped grindstone 1 is in contact with the side surface 20b of the workpiece. It becomes a condition. That is, in order to rotate the brush-like grindstone 1 by the movement of the workpiece 20, the rotation passes through the center of rotation at the tip surface of the brush-like grindstone 1 and is parallel to the direction of the force that the brush-like grindstone receives from the workpiece. When a straight line is defined as an axis of symmetry, the condition is that the contact surface of the brush-shaped grindstone 1 with the workpiece 20 is non-axisymmetric with respect to the axis of symmetry.
- FIG. 15 is a schematic diagram showing a third embodiment according to the processing method of the present invention.
- the workpiece 20 is fixed.
- the brush rotation mechanism 13 and one end of the shaft 14 are coupled so as to be rotatable about the longitudinal direction of the shaft 14 as a rotation axis.
- the other end of the shaft 14 is connected to the fixed part 10 of the polishing machine brush through the connecting part 15.
- the other structure of the brush for polishing machines is as described above.
- the brush rotating mechanism 13 rotates the shaft 14 and transmits the rotational force from the shaft 14 to the fixed portion 10, thereby connecting the connecting portion 15 to the revolution shaft. As shown in FIG.
- the brush-shaped grindstone 1 While rotating the brush-shaped grindstone 1, the brush-shaped grindstone 1 is brought into contact with the edge portion of the workpiece 20 to rotate the brush-shaped grindstone 1 along the rotation axis of the brush-shaped grindstone 1. 20 can be processed. Since the contact point with the workpiece 20 in the brush-shaped grindstone 1 does not become constant when the brush-shaped grindstone 1 contacts the workpiece 20 while rotating, a sufficient deburring and polishing effect can be obtained. In addition, it is possible to prevent only a part of the brush-like grindstone 1 from being excessively worn and to prolong the life of the brush-like grindstone 1.
- the brush rotating mechanism 13 is not particularly limited as long as it can rotate the shaft 14.
- a known motor such as a motor with a brush, a brushless motor, or a stepping motor can be used.
- the fourth embodiment of the present invention is a method of processing the workpiece 22 using the polishing machine brush 12 as a polishing tool while linearly moving the workpiece 22.
- FIG. 16 is a schematic diagram showing an example of a processing method according to the fourth embodiment.
- FIG. 16 is a view when the brush-like grindstone 1 is brought into contact with the workpiece 22 that moves linearly
- FIG. 16A is a view seen from the direction in which the brush-like grindstone 1 is brought into contact
- 16 (b) is a view as seen from a direction perpendicular to the direction.
- the shape of the workpiece 22 to be processed is not particularly limited.
- a rectangular parallelepiped workpiece 22 can be used as shown in FIG. The workpiece 22 moves linearly in the left direction.
- the tip surface of the brush-shaped grindstone 1 and the upper surface of the workpiece 22 are parallel (that is, the tip surface of the brush-shaped grindstone 1 and the upper surface of the workpiece 22 are aligned).
- the edge portion formed by the side parallel to the direction in which the workpiece 22 linearly moves on the upper surface of the workpiece 22 and the tip surface of the brush-like grindstone 1 are in contact with each other so that the tangent plane is parallel to the tangential plane. In this way, only a part of the front end surface is in contact with the upper surface of the workpiece 22.
- the front side end portion of the tip surface of the brush-like grindstone 1 is not in contact with the workpiece 22.
- the brush-shaped grindstone 1 is rotated by applying kinetic energy in the leftward direction to the contact portion of the tip surface of the brush-shaped grindstone 1 with the workpiece 22.
- the workpiece 22 may be linearly moved in only one direction, or may be reciprocated left and right. Since the workpiece 22 moves linearly so as to reciprocate the place where the brush-like grindstone 1 is provided, the deburring effect can be improved.
- the contact method between the workpiece 22 and the brush-like grindstone 1 is not particularly limited, but from the viewpoint of increasing the rotational force of the brush-like grindstone and improving the deburring effect, the rotation center on the tip surface of the brush-like grindstone is determined.
- the contact area of the brush-like grindstone with the workpiece is preferably axisymmetric. .
- the brush-like grindstone 1 is gripped by a tool holder 11 including a rotary gripping portion 7 and a fixing jig 8.
- the method for fixing the tool holder 11 to the machine tool is not particularly limited, and examples thereof include screwing the tool holder 11 to the machine tool.
- the brush-like grindstone 1 is brought into contact with the workpiece 22 that linearly moves, and the workpiece 22 is machined by rotating the brush-like grindstone 1 by the force received from the workpiece 22. Since the contact point with the workpiece 22 in the brush-like grindstone 1 is not constant, the effect of deburring and polishing can be sufficiently obtained, and only a part of the brush-like grindstone 1 is extremely worn. It is possible to extend the life of the brush-like grindstone 1.
- the cutting amount and the linear motion speed of the workpiece are adjusted so that the brush-like grindstone rotates. It is desirable.
- the speed of the linear motion in the workpiece 22 is not particularly limited, but is preferably 5 m / min or more, and more preferably 20 m / min or more.
- the processing method according to the fourth embodiment uses, for example, a linear motion when transporting the workpiece 22 to rotate the brush-like grindstone 1 when the workpiece 22 is transported. Can be taken. Also, when the workpiece 22 is reciprocated by a ball screw linear motion unit having a drive source such as a servo motor, the brush-like grindstone 1 is rotated using the linear motion of the workpiece 22, Deburring is possible.
- FIG. 17 is a schematic diagram showing a fifth embodiment according to the processing method of the present invention.
- FIG. 17 is a view when the brush-like grindstone 1 is brought into contact with the fixed workpiece 22 while linearly moving.
- the ball screw linear motion unit 16 includes a servo motor 17 and a slide block 18.
- the brush-like grindstone 1 is rotatably held by a rotary holding portion (not shown), and the rotary holding portion is connected to the slide block 18.
- the tip surface of the brush-like grindstone 1 and the upper surface of the workpiece 22 are parallel (that is, the tangent plane of the tip-like surface of the brush-like grindstone 1 and the upper surface of the workpiece 22 is parallel).
- the tip of the tip surface of the workpiece 22 is brought into contact with the edge portion formed by the side parallel to the direction in which the brush-like grindstone 1 linearly moves on the upper surface of the workpiece 22. Only the part is in contact with the upper surface of the workpiece 22.
- the left end portion of the tip surface of the brush-like grindstone 1 is not in contact with the workpiece 22.
- the brush-shaped grindstone 1 linearly moves in the direction of the arrow in the figure using the servo motor 16 as a drive source, so that the brush-shaped grindstone 1 has a brush-like shape at the contact portion with the workpiece 22. Energy for rotating the grindstone 1 counterclockwise is given, and the brush-shaped grindstone 1 rotates.
- the brush-like grindstone 1 may be linearly moved in only one direction or may be reciprocated. Since the brush-like grindstone 1 moves linearly so as to reciprocate the edge portion of the workpiece 22, the deburring effect can be improved.
- the rotary gripping part may be connected to the fixing jig, and the fixing jig and the slide block 18 may be connected.
- Example 1 Using a workpiece with a diameter of 100 mm and a brush-like grindstone with a diameter of 100 mm, the end surface of the workpiece and the brush shape while changing the lapping rate under the conditions of a cutting depth of 0.1 mm and a rotation speed of the workpiece of 2000 rpm The grindstone was brought into contact. The rotating direction of the brush-like grindstone at each lapping rate and the polishing effect on the workpiece were evaluated. The results are shown in Table 1. In Table 1, the W diameter indicates the diameter of the workpiece, and the B diameter indicates the diameter of the brush-like grindstone.
- ⁇ indicates a case where there is a deburring / polishing effect on the end surface of the workpiece and its edge portion
- NA indicates that the brush-like grindstone acts on the end surface of the workpiece and its edge portion. In other words, it indicates that there was no deburring / polishing effect, and “x” indicates that the brush-shaped grindstone did not rotate.
- Example 2 (Examples 2 and 3) The end surface of the workpiece and the brush-like grindstone were brought into contact with each other in the same manner as in Example 1 except that the diameter of the workpiece and the diameter of the brush-like grindstone were changed as shown in Table 1.
- Table 1 shows the evaluation of the rotating direction of the brush-like grindstone at each lapping rate and the deburring / polishing effect on the workpiece.
- Example 4 The end face of the workpiece and the brush-like grindstone were brought into contact with each other in the same manner as in Example 1 except that the diameter of the workpiece and the diameter of the brush-like grindstone were changed as shown in Table 2.
- Table 2 shows the evaluation of the rotating direction of the brush-like grindstone at each lapping rate and the polishing effect on the workpiece.
- the highest lapping rate in Example 4 is 120%
- the highest lapping rate in Example 5 is 50%.
- the entire brush-like grindstone is inside the workpiece as viewed from above. It is.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
図1は、本発明の実施の形態にかかる、研磨機用ブラシの一例を示す斜視図である。図2(a)は、本発明の実施の形態にかかる、研磨機用ブラシの一例を示す側面図であり、回転把持部の内部構造を表す図である。図2(b)は、本発明の実施の形態にかかる研磨機用ブラシを、ホルダの開口側から見た図である。図3は、図2(b)を、X-Xの線分で切断した状態を示す断面図である。本実施の形態において、研磨機用ブラシ12は、ブラシ状砥石1と、回転把持部7と、固定冶具8とから構成されている。ブラシ状砥石1は、線状砥材2とホルダ3と被把持部6を備えている。固定冶具8は、軸位置調整部9と、被固定部10を備えている。
本発明の実施の形態にかかる工具ホルダ11は、図1に示す研磨機用ブラシ12を構成する一部分であり、回転把持部7と、軸位置調整部9及び被固定部10からなる固定冶具8とを備えている。各部位の構成や機能等は、上記の研磨機用ブラシの項で説明した通りである。
(第一の実施の形態)
本発明の加工方法にかかる第一の実施の形態は、工具を回転させる動力を有さない旋盤等の工作機械において、研磨機用ブラシ12を研磨具として用いて、被加工物を回転運動させながら被加工物を加工する方法である。被加工物20の回転軸に沿った方から、ブラシ状砥石1を被加工物の端面に接触させることで、被加工物20の回転力によってブラシ状砥石1を回転させ、被加工物20を加工する。ブラシ状砥石1が回転しながら被加工物20に接触することにより、ブラシ状砥石1における被加工物20との接触点が一定とはならないため、バリ取り、研磨の効果を十分に得ることができ、かつ、ブラシ状砥石1の一部分だけが極端に磨耗するといったことを防ぎ、ブラシ状砥石1の寿命を長くすることが可能である。
第一の実施の形態では、ブラシ状砥石1を、被加工物20の回転軸に沿った方向から、被加工物の端面20aに接触させて加工する方法について述べたが、第二の実施の形態では、ブラシ状砥石1を、被加工物の側面20bに接触させて加工する方法について、説明する。第二の実施の形態に係る加工方法では、ブラシ状砥石1を回転運動する被加工物の側面20bと接触させることで、ブラシ状砥石1を回転させ、被加工物の側面20bに存在するバリや凹凸を除去する。
第一の実施の形態及び第二の実施の形態では、被加工物20が回転運動する場合の加工方法について述べたが、第三の実施の形態では、被加工物20が固定され、ブラシ状砥石1が公転運動する場合の加工方法について、説明する。
本発明にかかる第四の実施の形態は、被加工物22を直線運動させながら、研磨機用ブラシ12を研磨具として用いて、被加工物22を加工する方法である。
第四の実施の形態では、被加工物20が直線運動する場合の加工方法について述べたが、第五の実施の形態では、被加工物20が固定され、ブラシ状砥石1が直線運動する場合の加工方法について、説明する。
径100mmの被加工物と、径100mmのブラシ状砥石を用いて、切込み量0.1mm、被加工物の回転数2000rpmの条件で、ラップ率を変更しながら、被加工物の端面とブラシ状砥石とを接触させた。各ラップ率におけるブラシ状砥石の回転方向、及び被加工物への研磨効果を評価した。結果を表1に示す。表1において、W径は被加工物の径を示し、B径はブラシ状砥石の径を示す。また、「○」は被加工物の端面、及びそのエッジ部分に対するバリ取り・研磨効果があった場合を示し、「NA」はブラシ状砥石が被加工物の端面、及びそのエッジ部分に作用せず、バリ取り・研磨効果がなかったことを示し、「×」はブラシ状砥石が回転しなかったことを示す。
被加工物の径と、ブラシ状砥石の径を、表1に示すように変更した以外は、実施例1と同様にして、被加工物の端面とブラシ状砥石とを接触させた。各ラップ率におけるブラシ状砥石の回転方向、及び被加工物へのバリ取り・研磨効果についての評価を表1に示す。
被加工物の径と、ブラシ状砥石の径を、表2に示すように変更した以外は、実施例1と同様にして、被加工物の端面とブラシ状砥石とを接触させた。各ラップ率におけるブラシ状砥石の回転方向、及び被加工物への研磨効果についての評価を表2に示す。なお、実施例4における最も高いラップ率は120%であり、実施例5における最も高いラップ率は50%であり、両者ともに、上方視で、ブラシ状砥石全体が被加工物の内部にある場合である。
2 線状砥材
3 ホルダ
4 挿通穴
5 支軸
6 被把持部
7 回転把持部
8 固定冶具
9 軸位置調整部
10 被固定部
11 工具ホルダ
12 研磨機用ブラシ
13 ブラシ回転機構
14 シャフト
15 連結部
16 ボールねじ直動ユニット
17 サーボモータ
18 スライドブロック
20 被加工物
20a 被加工物端面
20b 被加工物側面
21 工具保持部(工作機械)
22 被加工物
Claims (12)
- 工具を回転させる動力を有さない工作機械において、ブラシ状砥石と被加工物とを接触させつつ、ブラシ状砥石と被加工物を相対運動させることによってブラシ状砥石を回転させることを特徴とする、被加工物を加工する加工方法。
- ブラシ状砥石の先端面において、被加工物に接触することにより駆動力が伝達される部分と、被加工物のエッジ部分に接触することによりバリ取り作用が発生する部分とが異なることを特徴とする、請求項1に記載の加工方法。
- 相対運動が、被加工物の運動であることを特徴とする請求項1又は2に記載の加工方法。
- 被加工物の運動が、回転運動であることを特徴とする請求項3に記載の加工方法。
- 被加工物の回転軸と直交する被加工物の端面からブラシ状砥石を被加工物に接触させることにより、被加工物の回転方向と同方向にブラシ状砥石を回転させることを特徴とする請求項4に記載の加工方法。
- 被加工物の回転軸と直交する被加工物の端面からブラシ状砥石を被加工物に接触させることにより、被加工物の回転方向と逆方向にブラシ状砥石を回転させることに特徴を有する請求項4に記載の加工方法。
- ブラシ状砥石の先端面における回転中心を通り、かつ、ブラシ状砥石が被加工物から受ける力の向きと平行な直線を対称軸として定義した場合に、ブラシ状砥石における被加工物との接触面が、対称軸に対して非線対称となるように、ブラシ状砥石を被加工物に接触させることに特徴を有する請求項4に記載の加工方法。
- 被加工物の運動が、直線運動であることを特徴とする請求項3に記載の加工方法。
- 相対運動が、ブラシ状砥石の公転運動であることを特徴とする請求項1又は2に記載の加工方法。
- 相対運動が、ブラシ状砥石の直線運動であることを特徴とする請求項1又は2に記載の加工方法。
- 線状砥材及び該線状砥材を保持するホルダを有するブラシ状砥石と、
前記ホルダの後端側を支持することによって、ブラシ状砥石を回転可能な状態で把持する回転把持部と、
回転把持部と連結され、回転把持部を工作機械に固定するための固定治具とを備えることに特徴を有する研磨機用ブラシ。 - 工具を回転可能な状態で把持する回転把持部と、
回転把持部を工作機械に固定するための固定治具とを備える工具ホルダであって、
固定治具が、軸位置調整部と、工作機械に固定される被固定部とを有し、
回転把持部が軸位置調整部と連結され、軸位置調整部が被固定部と連結部を介して連結され、軸位置調整部が該連結部を軸として回転可動であり、軸位置調整部によって、被加工物と接触する工具の回転軸の位置を調整可能な工具ホルダ。
Priority Applications (6)
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JP2017562182A JP6529611B2 (ja) | 2016-01-18 | 2016-01-18 | 被加工物の加工方法、研磨機用ブラシ及び工具ホルダ |
CN201680078274.XA CN108602172A (zh) | 2016-01-18 | 2016-01-18 | 被加工物的加工方法、研磨机用刷以及工具支架 |
EP16886254.8A EP3406401A4 (en) | 2016-01-18 | 2016-01-18 | WORKPIECE PROCESSING, POLISHING MACHINE BRUSH AND TOOL HOLDER |
PCT/JP2016/051310 WO2017126011A1 (ja) | 2016-01-18 | 2016-01-18 | 被加工物の加工方法、研磨機用ブラシ及び工具ホルダ |
US16/069,043 US20190022818A1 (en) | 2016-01-18 | 2016-01-18 | Working method for workpiece and polishing machine brush and tool holder used therefor |
TW106101721A TW201729936A (zh) | 2016-01-18 | 2017-01-18 | 被加工物的加工方法及使用其的研磨機用刷子以及工具支架 |
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PCT/JP2016/051310 WO2017126011A1 (ja) | 2016-01-18 | 2016-01-18 | 被加工物の加工方法、研磨機用ブラシ及び工具ホルダ |
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EP (1) | EP3406401A4 (ja) |
JP (1) | JP6529611B2 (ja) |
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JP6421267B1 (ja) * | 2018-05-08 | 2018-11-07 | 株式会社ジーベックテクノロジー | 研磨ブラシの研磨方法 |
CN109794840A (zh) * | 2019-02-27 | 2019-05-24 | 昆明理工大学 | 一种轴承剖光装置 |
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- 2016-01-18 EP EP16886254.8A patent/EP3406401A4/en not_active Withdrawn
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US20190022818A1 (en) | 2019-01-24 |
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