WO2007077964A1 - Truing device and truing method for grinding wheel - Google Patents

Truing device and truing method for grinding wheel Download PDF

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Publication number
WO2007077964A1
WO2007077964A1 PCT/JP2006/326378 JP2006326378W WO2007077964A1 WO 2007077964 A1 WO2007077964 A1 WO 2007077964A1 JP 2006326378 W JP2006326378 W JP 2006326378W WO 2007077964 A1 WO2007077964 A1 WO 2007077964A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding wheel
tool
end surface
truer
grinding
Prior art date
Application number
PCT/JP2006/326378
Other languages
French (fr)
Japanese (ja)
Inventor
Tomoyuki Kasuga
Hiroshi Morita
Takayuki Yoshimi
Eiji Kato
Hisanobu Kobayashi
Original Assignee
Jtekt Corporation
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 Jtekt Corporation filed Critical Jtekt Corporation
Priority to US12/159,534 priority Critical patent/US20090280726A1/en
Priority to EP06843748.2A priority patent/EP1974860A4/en
Publication of WO2007077964A1 publication Critical patent/WO2007077964A1/en

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Classifications

    • 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
    • B24B53/00Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/04Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
    • B24B53/053Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool
    • 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
    • B24B53/00Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12Dressing tools; Holders therefor
    • B24B53/14Dressing tools equipped with rotary rollers or cutters; Holders therefor

Definitions

  • the present invention relates to a grinding wheel truing apparatus and a truing method for correcting a grinding wheel which is a processing tool of a grinding machine.
  • the grinding wheel's tooling device has the rotation axis of the correction tool arranged in the same direction as the rotation axis of the grinding wheel, and has a cup-shaped tool on the side of the disk-shaped diamond tool as the correction tool. Using this tool, the peripheral surface of the grinding wheel was tooled with the outer peripheral surface of the disk-shaped diamond tool, and the end surface of the grinding wheel was tooled with the end surface of the force-pull tool.
  • Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 2 — 2 8 3 2 3 5
  • Patent Document 1 in addition to the crushing device for the end surface of the grinding wheel, a truing device for the circumferential surface is required in order to crush the circumferential surface and the end surface of the grinding wheel. There is a problem that the cost associated with the tooling device increases and a space for installing the tooling device is required when the tool is provided in a grinder or the like, which increases the size of the grinder.
  • the number of abrasive grains that come into contact with the correction tool is reduced, the contact pressure on the abrasive grains is relatively increased, and the abrasive grains are sufficiently crushed to sharpen the cutting edge.
  • the contact with the abrasive grains was reduced to suppress the generation of grinding heat.
  • the grinding wheel has a low abrasive grain density and few abrasives come into contact with the workpiece, so that the grinding efficiency is deteriorated and the life of the grinding wheel is shortened. Disclosure of the invention
  • a truing device for a grinding wheel according to the present invention comprises:
  • a grinding wheel truing device comprising a correction tool supported rotatably and correcting a grinding wheel rotated by the correction tool
  • the correction tool has a peripheral surface tool whose rotating peripheral surface is a truer surface, and an end surface tooler whose end surface in the rotation axis direction is a truer surface,
  • the end surface of the grinding wheel is corrected with the circumferential surface tool, and the rotational axis of the correction tool is arranged substantially orthogonal to the rotational axis of the grinding wheel so that the peripheral surface of the grinding wheel is corrected with the end surface tool. It is characterized by that.
  • a “disk-shaped tourer” can be exemplified.
  • examples of the “end surface tourer” include “cup type tourer”, “tourer having one or more ridges”, and the like.
  • the peripheral surface and the end surface truers may be those using diamond abrasive grains or the like, or those using columnar diamonds.
  • the word “truing” is used to mean both the narrow “truing” and the dressing. In other words, it is named “truing”, including both the work of adjusting the shape of the grinding wheel and the work of adjusting the surface condition.
  • “truing” means to adjust the outer peripheral surface of the grinding wheel to a desired shape
  • “dressing” means to adjust the surface state of the grinding wheel surface of the grinding wheel, that is, spilled, clogged, clogged. Is to repair etc.
  • tooling and dressing are not strictly separated.
  • a device for tooling and a device for dressing are also called truing devices or dressing devices. It is out. This is thought to be due to the fact that dressing may be completed at the same time if the grinding wheel is pulled.
  • the rotation axis of the correction tool is arranged substantially orthogonal to the rotation axis of the grinding wheel, the end surface of the grinding wheel is tooled with the circumferential tool, and the circumferential surface of the grinding wheel is tooled with the end surface tool. It is intended to be As a result, the contact area between the grinding wheel and the correction tool on both the end face and peripheral surface of the grinding wheel can be reduced as much as possible by making point contact or line contact.
  • the wheel edge of the wheel is prevented from being worn and flattened by rubbing the abrasive grains of the car, and the contact pressure with the grinding wheel can be increased, so that the grinding wheel abrasive grains are crushed in good condition. As a sharp cutting edge, the sharpness of the grinding wheel can be improved.
  • the abrasive grains of the grinding wheel can be made sharper, the holding edge of the abrasive grains by grinding can be improved, and the interval for carrying out the tooling (tooling in the evening) is increased. It becomes longer and can improve the production efficiency by increasing the operating rate of the grinding machine.
  • the contact pressure with the grinding wheel can be increased, it is possible to bring more abrasive grains into contact with the grinding wheel when compared with the conventional grinding wheel. Can be corrected.
  • the grinding wheel with higher abrasive density can be corrected satisfactorily, it becomes possible to attach a grinding wheel with high abrasive density to the grinding machine for grinding, and the grinding efficiency of the grinding machine can be improved. Can be improved.
  • the end surface and the peripheral surface of the grinding wheel can be trued with a single tool. Therefore, it is possible to suppress an increase in cost associated with the truing device, and it is possible to suppress an increase in the size of the grinder even if the grinder is provided.
  • the rotation axis of the correction tool is arranged substantially perpendicular to the rotation axis of the grinding wheel, when the truing device is provided on the worktable side such as the headstock of the grinding machine, it is the same as the direction in which the worktable extends.
  • the disk-shaped surface of the correction tool extends in the direction, and the amount of protrusion of the truing device from the headstock can be reduced, and the increase in size of the grinding machine can be suppressed.
  • the grinding machine for a grinding wheel according to the present invention is characterized in that "the correction tool has an inner diameter of the end surface truer larger than a grinding wheel width of the grinding wheel” Is.
  • the “inner diameter of the end face tool” is the inner diameter of the annular track of the end face tool formed by rotating the correction tool.
  • the rotation axis of the correction tool is arranged substantially orthogonally to the rotation axis of the grinding wheel as described above, and the peripheral surface of the grinding wheel is tooled with the end surface tool of the correction tool, Since the relative moving direction of the contact part of the end surface tooler in contact is opposite to the left and right across the rotation axis of the correction tool, the tool is corrected when the peripheral surface of the grinding wheel is tooled with the end surface tool. If the wheel is in contact with the contact part on the opposite side beyond the rotation axis, the truing conditions for the grinding wheel will change significantly, making it difficult to true the grinding wheel to the optimum state.
  • the inner diameter of the end surface tooler in the correction tool is larger than the grinding wheel width of the grinding wheel to be corrected, and the peripheral surface of the grinding wheel is aligned with the axial direction of the grinding wheel using the end surface tool.
  • the relationship between the inner diameter B and the grinding wheel width TW is within the range satisfying TW ⁇ B ⁇ 1.2 TW to 3 TW. This is because if the inner diameter B of the end surface tool is further increased, the truing device becomes larger and the space becomes disadvantageous in terms of cost.
  • the truing device for a grinding wheel according to the present invention is characterized in that “the end surface truer of the correction tool is a columnar diamond”.
  • the “columnar diamond” is preferably a polycrystalline diamond in which a diamond film synthesized by a known synthesis method such as a CVD method, a plasma jet method, or a flame method is formed in a columnar shape.
  • single crystal diamond has been used for correction tools.
  • single crystal diamond is easy to crack large, there is a problem that the surface shape of the correction tool changes greatly depending on the cracking method and the truing performance of the correction tool becomes unstable.
  • the cracking is fine and the end surface truer is reduced substantially uniformly, and the change in the surface shape of the truer is minimized. And truing performance can be stabilized.
  • the truing method of the grinding wheel according to the present invention includes:
  • the rotation axis of the correction tool having a circumferential surface tool whose rotation surface is a true surface and an end surface tool whose rotation surface direction is a true surface is substantially perpendicular to the rotation axis of the grinding wheel.
  • the end surface of the grinding wheel is corrected with the peripheral surface tool of the correction tool, and the peripheral surface of the grinding wheel is corrected with the end surface tool.
  • the present invention it is possible to achieve the same effect as that of the above-described grinding machine for a grinding wheel, and to break the abrasive grains of the grinding wheel into a good state to obtain a sharp cutting edge. It is possible to improve the sharpness of the peripheral surface and the end surface of the grinding wheel and to suppress the occurrence of grinding burn during the grinding process.
  • the grinding method for a grinding wheel includes the following: “When a chamfer is provided between the end surface and the peripheral surface of the grinding wheel, the predetermined direction with respect to the rotation axis direction of the grinding wheel” When the direction is one side and the opposite direction is the other side, the chamfered portion on one side of the grinding wheel is corrected on the other side of the end surface tool, and the chamfered portion on the other side of the grinding wheel is changed to the end surface truer.
  • the method is characterized in that the rotation direction of the correction tool is reversed between when the one chamfered portion is corrected and when the other chamfered portion is corrected.
  • the grinding wheel and the end face tool of the correction tool are relative to each other at both ends of the grinding wheel.
  • the chamfered portion of the grinding wheel can be further trued in a good state.
  • FIG. 1 is a plan view showing a schematic configuration of a grinding machine to which an example of a truing device for a grinding wheel according to the present invention is applied.
  • FIG. 2 is an enlarged view showing a correction tool in the truing apparatus of the grinding wheel shown in FIG.
  • FIG. 3A is an explanatory view showing an operation mode of the truing device of the grinding wheel in FIG. 1 together with a truing method.
  • FIG. 3B is an explanatory view showing an operation mode of the truing device for the grinding wheel in FIG. 1 together with a truing method.
  • FIG. 4A is a plan view showing a correction tool having a different form from the correction tool shown in FIG.
  • FIG. 4B is a plan view showing a correction tool having a different form from the correction tool shown in FIG.
  • FIG. 5A is an explanatory diagram showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a correction tool of a different form.
  • FIG. 5B is an explanatory diagram showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a modified tool of a different form.
  • FIG. 6A is an explanatory view showing a truing method of the grinding wheel provided with the R portion.
  • FIG. 6B is an explanatory view showing a truing method of the grinding wheel provided with the R portion.
  • BEST MODE FOR CARRYING OUT THE INVENTION an embodiment of a truing device and a truing method for a grinding wheel according to the present invention will be described in detail with reference to FIGS. 1 to 3B.
  • FIG. 1 is a plan view showing a schematic configuration of a grinding machine to which an example of a truing device for a grinding wheel of the present invention is applied.
  • FIG. 2 is an enlarged view showing a correction tool in the crushing device of the grinding wheel shown in FIG.
  • FIG. 3A and FIG. 3B are explanatory diagrams showing the operation mode of the grinding device for the grinding wheel in FIG. 1 together with the truing method.
  • a grinding machine 1 to which a grinding wheel crane device according to an embodiment of the present invention is applied includes a bed 2 constituting a base portion, and a grinding wheel placed on the bed 2.
  • Wheel table 3 that supports the vehicle T so that it can be rotated
  • X-axis drive device 4 that moves the wheel table 3 in the X-axis direction
  • a work table that is placed at a position different from the wheel table 3 on the bed 2 5 and the headstock 7 and the tailstock 8 having the spindle 6 which is placed on the worktable 5 and supports the work W and rotationally drives the work W, and the worktable 5 is moved in the Z-axis direction.
  • a shaft drive device 9 and a truing device 11 having a correction tool 10 for correcting the grinding wheel T provided on the head stock 7 are provided.
  • the X-axis driving device 4 and the Z-axis driving device 9 are each composed of a known driving device configured using a servo motor, a feed screw, or the like.
  • the grinding wheel base 3 is composed of a grinding wheel shaft 1 2 on which the grinding wheel T is mounted, a shaft head 13 that rotatably supports the grinding wheel shaft 12, and a motor that rotates the grinding wheel shaft 12. And a drive unit 14.
  • the grinding wheel T is formed in a disk shape using an appropriate grinding stone material such as a CBN grinding wheel so that the outer peripheral surface and the end surface near the outer peripheral surface become a grinding surface, and is driven to rotate together with the grinding wheel shaft 12. It is rotationally driven by the device 14.
  • the corrective tool 10 includes a disk-shaped peripheral tool 15 whose outer peripheral surface is a truer surface, and an end of the corrective tool 10 whose end surface protrudes in the rotation axis direction is a truer surface.
  • the peripheral surface tour 15 is a disk-shaped diamond tour having a known diamond metal bond layer.
  • the end surface truer 16 is composed of a holding member 17 formed in a straight ridge and a columnar diamond 18 embedded and held in a holding hole formed in the holding member 17. The columnar diamond 18 is exposed from the end face of the holding member 17 (see Fig. 2).
  • the columnar diamond 18 is formed by forming a diamond film in a columnar shape using a known synthesis method such as a C VD method, and is a polycrystalline diamond.
  • the holding member 17 is formed using an appropriate material such as metal. In this example, two columnar diamonds 18 are embedded and held in the holding member 17.
  • the clawing device 1 1 having the correction tool 1 0 rotatably supports the correction tool 1 0, and the rotation axis of the grinding wheel T on which the rotation axis of the correction tool 10 is mounted on the grinding wheel base 3.
  • a tool base 19 that is supported so as to be substantially orthogonal to the tool base, and a rotary drive device (not shown) comprising a motor that rotates the correction tool 10 rotatably supported on the tool base 19.
  • a rotary drive device (not shown) comprising a motor that rotates the correction tool 10 rotatably supported on the tool base 19.
  • the grinding machine 1 controls the X-axis drive device 4, the rotation drive device of the main shaft 6, the Z-axis drive device 9, the rotation drive device 14 of the grinding wheel T, the rotation drive device of the tooling device 1 1, etc.
  • a CNC control device 20 is further provided. This CNC control unit 20 can process the workpiece W by numerical control and correct the grinding wheel T by executing a predetermined program.
  • CPU, ROM, RAM, hard disk, etc. It is configured using the computer that has it.
  • the truing method of the grinding wheel T in the grinding machine 1 of the present embodiment and the operation mode of the truing device 11 will be described together.
  • the X-axis drive 4 and the CNC controller 20 The grinding wheel base 3 and the work table 5 are moved appropriately by controlling the Z-axis driving device 9 so that the outer peripheral surface of the peripheral tool 15 in the correction tool 10 is brought into contact with the end surface of the grinding wheel T.
  • the grinding wheel T and the correction tool 10 are moved relative to each other in the X-axis direction while the circumferential surface wheel 15 is cut into the end surface of the grinding wheel T by a predetermined amount. Truing with surface tooler 15 (see Fig. 3A) and repeat this action a predetermined number of times.
  • the contact portion between the end surface of the grinding wheel T and the disk-shaped circumferential surface tool 15 becomes a substantially point contact, so the peripheral surface tool 15 rubs the abrasive grains of the grinding wheel T. It is possible to prevent the abrasive blade edge from being worn and flattened, and to obtain an abrasive having a sharp blade edge.
  • either the end surface truing on one side or the end surface truing on the other side rotates either the grinding wheel T or the correction tool 10 in the opposite direction. Truing to make the moving direction of the contact part between the grinding wheel T and the correction tool 10 the same direction.
  • the CNC controller 2 0 controls the X-axis drive 4 and Z-axis drive 9 to move the grinding wheel base 3 and the work table 5 as appropriate.
  • the end surface of the end surface tool 16 in the tool 10 is brought into contact with the outer peripheral surface of the grinding wheel T.
  • the peripheral surface of the grinding wheel T is moved to the end surface by moving the grinding wheel T and the correction tool 10 relative to each other in the Z-axis direction. Touring with Toura 1 6 (see Figure 3B) and repeating this action a predetermined number of times.
  • the contact portion between the circumferential surface of the grinding wheel T and the end surface tool 16 is substantially linear contact, but a line extending in a direction substantially perpendicular to the rotational direction of the end surface tool 16.
  • the end surface tool 16 rubs the abrasive grains of the grinding wheel T more than necessary to prevent the abrasive blade edges from being worn and flattened.
  • the cutting amount when grinding the end face of the grinding wheel T by the circumferential surface tool 15 is 2 to 3; m, the number of repetitions is 5 to 10 times, and the grinding wheel by the end face tool 16 is used.
  • the cutting depth when cruising the surface of the car T is about 5 / m in diameter and the number of repetitions is 4-5 times.
  • a comparison of the grinding wheel modified with the conventional truing device that truws the end face of the grinding wheel with a force-pull type tool and the grinding wheel T modified with the truing device 11 of the present embodiment shows a grinding efficiency. It was about 10 times higher, and the truing-in evening was about 20 times higher.
  • the grinding wheel As described above, according to the crushing device 11 and the clawing method of the grinding wheel of the present embodiment, after the rotational axis of the correction tool 10 is arranged substantially orthogonal to the rotational axis of the grinding wheel T, the grinding wheel The end surface of the wheel T is twisted with the peripheral surface wheel 15 and the peripheral surface of the grinding wheel T is ground with the end surface tool 16, and both the end surface and the peripheral surface of the grinding wheel T are ground.
  • the contact area between T and the correction tool 10 can be reduced as much as possible by making point contact or line contact, and the correction tool 10 can rub the abrasive grains of the grinding wheel T more than necessary.
  • the blade edge can be prevented from being worn and flattened, and the contact pressure can be increased, so that the abrasive grains of the grinding wheel T can be crushed into a good state to make a sharp edge.
  • the sharpness of the grinding wheel T can be improved.
  • the abrasive grains of the grinding wheel T can be made to have a sharper cutting edge, it is possible to improve the holding of the cutting edge of the abrasive grains by grinding, and the interval for carrying out the tooling (tooling interval) is increased. It becomes longer, and the operating rate of the grinding machine 1 can be increased to improve production efficiency.
  • the contact pressure between the grinding wheel cutter and the correction tool 10 can be increased, more abrasive grains can be brought into contact with the grinding tool than before.
  • a grinding wheel with high grain density can be corrected.
  • the grinding wheel wheel with higher abrasive density can be corrected satisfactorily, it becomes possible to mount the grinding wheel wheel with higher abrasive density on the grinding machine 1 for grinding. The grinding efficiency can be improved.
  • the correction tool 10 having the peripheral surface tool 15 and the end surface tool 16 is used, it is possible to tool the end surface and the peripheral surface of the grinding wheel with a single tooling device 11. In addition, it is possible to suppress an increase in cost associated with the truing device 11 and to suppress an increase in the size of the grinding machine 1.
  • the rotation axis of the correction tool 10 is arranged substantially perpendicular to the rotation axis of the grinding wheel, the disk-shaped circumferential surface tool 1 of the correction tool 10 extends in the same direction as the work table 5 extends. The surface of 5 extends and the amount of protrusion of the truing device 10 from the headstock 7 can be reduced, and the increase in size of the grinding machine 1 can be suppressed.
  • the end surface truer 16 is made of polycrystalline columnar diamond 18, the cracking is fine and the end surface truer 16 is reduced substantially uniformly, and the change in the surface shape is minimized. And truing performance can be stabilized.
  • the end surface truer 16 6 force in the correction tool 10 is shown in which the columnar diamond 18 is embedded and held in the convex holding member 17 formed linearly.
  • various shapes A cylindrical holding member embedded with columnar diamond 18 may be used.
  • a plurality of linear and convex holding members 25 are provided in the circumferential direction so as to extend in the normal direction at positions away from the rotation center of the correction tool 10.
  • Each holding member 25 is embedded and held with columnar diamonds 18 or a plurality of columnar diamonds 18 are embedded and held in a cup-shaped holding member 26 as shown in Fig. 4B. It may be a thing etc., and there can exist an effect similar to the above.
  • FIGS. 5A to 6B are explanatory views showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a correction tool of a further different form.
  • FIG. 6A and FIG. 6B are explanatory views showing a method for crushing a grinding wheel equipped with an R portion.
  • the correction tool 30 has substantially the same form as the correction tool 10 shown in FIG. 4B. It is composed of a cup-shaped end surface tour 3 2.
  • the correction tool 30 is a peripheral surface trough 31 and an end surface trough 3 2 force diamond tour.
  • FIG. 5A to FIG. 6B for convenience, only the end face truer 32 is shown in cross section.
  • the inner diameter B of the end surface truer 32 is larger than the grinding wheel width TW of the grinding wheel T as shown in the figure.
  • the inner diameter B of the end face truer 3 2 is preferably in a range satisfying T W ⁇ B and 1.2 T W to 3 T W.
  • the correction tool 30 may be a tool in which a columnar diamond is held on the end face truer 32 as in the case shown in FIG. 4B.
  • This correction tool 30 is, for example, a vine of the grinding machine 1 shown in FIG. — Used in place of the correction tool 10 attached to the inching device 1 1. Note that the end surface clawing of the grinding wheel T is the same as the clawing by the correction tool 10 described above, and a description thereof will be omitted here.
  • both end sides of the end surface truer 3 2 with the rotation axis of the correction tool 30 are sandwiched by the grinding wheel T. It becomes a contact part which can contact with a surrounding surface. Since the movement directions of the contact portions of the end surface truer 32 are opposite to each other across the rotation shaft, the rotation of the grinding wheel T moves in the same direction as the contact portion of the grinding wheel T moves. Use the contact part of end face truer 3 2 to crush the peripheral surface of grinding wheel T.
  • the contact portion of the grinding wheel T is rotated so as to move upward on the paper surface, and the correction tool 30 provided with the end surface tour 32 is turned on the paper surface.
  • the contact portion on the right side of the end face truer 3 2 is the same as the direction of movement of the grinding wheel T, so the left side contact portion of the end face truer 3 2 is the circumferential surface of the grinding wheel T.
  • the grinding wheel base 3 and the work table 5 are appropriately moved so as not to come into contact with the wheel, and the peripheral surface of the grinding wheel T is trued at the contact portion on the right side of the end face tool 32.
  • the grinding wheel T is moved to the end face truer by the circumferential truing of the grinding wheel T. Even if the wheel moves to the inside of 2, the peripheral surface of the grinding wheel T does not come into contact with the contact portion on the left side of the end surface tour 32. Also, the CNC controller 20 controls the relative movement of the grinding wheel T and the end surface pulley 3 2 so that the contact portion on the left side, that is, the opposite side of the end surface pulley 3 2 does not contact the peripheral surface of the grinding wheel T. It has become.
  • FIGS. 6A and 6B when an R portion 33 as a chamfered portion is formed between the end face and the peripheral surface of the grinding wheel T, the left side R in the drawing of the grinding wheel T is shown.
  • the part 33 is brought into contact with the right side contact portion of the end surface truer 32, and the tool is attached (see FIG. 6A).
  • the direction of movement of the contact portion on the left side of the end face tool 3 2 is changed by reversing the rotation direction of the end face tool 3 2 (correcting tool 30).
  • Set the same direction as the moving direction of the contact part of the grinding wheel T, and contact the contact part on the left side of the end face tool 32 to make it a tool see Fig. 6B).
  • the grinding wheel base 3 and the work table 5 are appropriately moved by controlling the X-axis driving device 4 and the Z-axis driving device 9 by the CNC control device 20.
  • the desired R shape is achieved.
  • the inner diameter B of the end face tool 32 is made larger than the grinding wheel width TW of the grinding wheel, and the end face tooling is performed.
  • the contact part on the opposite side of the end surface tooler 3 2 is not in contact with the grinding wheel T. It is possible to prevent a large change, and to grind the grinding wheel T to the optimum state.
  • the relative movement direction of the contact portion between the grinding wheel T and the end surface truer 3 2 is the same in the left and right directions. Since the truing conditions are not changed in the R section 33 of the wheel, the R section 33 of the grinding wheel T can be crushed in a good condition.
  • the present invention is not limited to this embodiment, and as described below, it does not depart from the gist of the present invention.
  • Various improvements and design changes are possible. That is, in the present embodiment, the end surface truer 16 of the correction tool 10 is provided with the columnar diamond 18, but the present invention is not limited to this, and diamond abrasive grains similar to the peripheral surface truer 15 are used. It may be used. Further, columnar diamond may be embedded in the peripheral surface tour 15. Also by these, the same operational effects as described above can be obtained.
  • the present invention is applied to the grinding machine 1 that grinds the cylinder.
  • the present invention is not limited to this.

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  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

A truing device for a grinding wheel having a rotatively supported correction truing tool and correcting the grinding wheel rotating with the correction tool. The correction tool includes a peripheral surface truer of which rotating peripheral surface is formed as a truer surface and an end surface truer of which rotating axial end surface is formed as a truer surface. The rotating axis of the correction tool is disposed approximately perpendicular to the rotating axis of the grinding wheel so that the end surface of the grinding wheel is corrected by the peripheral surface truer and the peripheral surface of the grinding wheel is corrected by the end surface truer.

Description

明 細 書 .. 砥石車のツルーィング装置及びツルーィング方法 技術分野  Description .. Truing device and truing method of grinding wheel Technical Field
本発明は、 研削盤の加工工具である砥石車を修正するための砥石車の ツルーィング装置及びツルーィング方法に関するものである。 背景技術  The present invention relates to a grinding wheel truing apparatus and a truing method for correcting a grinding wheel which is a processing tool of a grinding machine. Background art
ワークのフランジ部等の端面に対してスラス ト研削やプランジ研削等 を行う場合、 砥石車の周面と端面とを修正工具を用い 修正 (以下、 ッ ルーイングとも称す) する必要があり、 従来の砥石車のツル一イング装 置は、 その修正工具の回転軸が砥石車の回転軸と同じ方向に配置される と共に、 修正工具として、 円盤形状のダイヤモンドツルァの側面にカツ プ型ツルァを備えたものを用いて、 砥石車の周面を円盤形状のダイヤモ ンドツルァの外周面でツル一イングし、 砥石車の端面を力ップ型ツルァ の端面でツル一イングしていた。  When thrust grinding or plunge grinding is performed on the end surface of the workpiece flange, etc., it is necessary to modify the peripheral surface and end surface of the grinding wheel using a correction tool (hereinafter also referred to as “truing”). The grinding wheel's tooling device has the rotation axis of the correction tool arranged in the same direction as the rotation axis of the grinding wheel, and has a cup-shaped tool on the side of the disk-shaped diamond tool as the correction tool. Using this tool, the peripheral surface of the grinding wheel was tooled with the outer peripheral surface of the disk-shaped diamond tool, and the end surface of the grinding wheel was tooled with the end surface of the force-pull tool.
ところで、 砥石車の端面をカツプ状ツルァの端面でツルーィングする 場合、 砥石車と修正工具との接触面積が大きくなつて、 砥石車の砥粒先 端が修正工具と必要以上に接触して砥粒先端が平坦なものになり易く、 砥石車の切味が不足する問題があった。 そこで、 特許文献 1 に示すよう に、 円盤形状のダイヤモンドツルァの回転軸を砥石車の回転軸に対して 直交するように配置し、 円盤形状のダイヤモンドツルァの外周面で砥石 車の端面をツルーィングするものが提案されている。  By the way, when the end face of the grinding wheel is trued with the end face of the cup-shaped truer, the contact area between the grinding wheel and the correction tool becomes large, and the abrasive tip of the grinding wheel comes into contact with the correction tool more than necessary. There was a problem that the tip was likely to be flat and the sharpness of the grinding wheel was insufficient. Therefore, as shown in Patent Document 1, the rotational axis of the disk-shaped diamond truer is arranged so as to be orthogonal to the rotational axis of the grinding wheel, and the end surface of the grinding wheel is placed on the outer peripheral surface of the disk-shaped diamond truer. Something to be truing has been proposed.
出願人は、 本願出願時において、 以上の技術情報が記載されている文 献として、 以下のものを知見している。 特許文献 1 : 特開 2 0 0 2 — 2 8 3 2 3 5号公報 At the time of filing of the present application, the applicant knows the following as references containing the above technical information. Patent Document 1: Japanese Patent Laid-Open No. 2 0 0 2 — 2 8 3 2 3 5
しかしながら、 特許文献 1のものでは、 砥石車の周面と端面とをツル 一イングするためには、 砥石車の端面用のツル一イング装置の他に、 周 面用のツルーィング装置が必要となり、 ツル一ィング装置に係るコス 卜 が増加すると共に、 研削盤等に備えた場合に、 それらのツル一イング装 置を設置するためのスペースが必要となり、 研削盤が大型化する問題が ある。  However, in Patent Document 1, in addition to the crushing device for the end surface of the grinding wheel, a truing device for the circumferential surface is required in order to crush the circumferential surface and the end surface of the grinding wheel. There is a problem that the cost associated with the tooling device increases and a space for installing the tooling device is required when the tool is provided in a grinder or the like, which increases the size of the grinder.
一方、 砥石車の端面をカップ型ツルァでツル一イングした場合、 砥石 車と修正工具との接触が面接触になるので接触圧が小さくなり砥粒を充 分に破砕して鋭利な刃先が形成できなかったり、 カップ型ツルァの回転 方向に沿って連続した接触となるので同じ砥粒を何度もツルァで擦って しまい砥粒の刃先が摩耗して刃先が平坦なものとなったり して、 砥石車 の切味を向上させることができず、 その砥石車でワークを加工すると研 削焼けが発生し易くなる問題がある。  On the other hand, when the end face of the grinding wheel is tooled with a cup type tool, the contact between the grinding wheel and the correction tool becomes surface contact, so the contact pressure is reduced and the abrasive grains are sufficiently crushed to form a sharp cutting edge. Or the contact is continuous along the rotation direction of the cup-type tooler, and the same abrasive grain is rubbed with the tool many times and the cutting edge of the abrasive grain wears out, making the cutting edge flat. There is a problem that the sharpness of the grinding wheel cannot be improved, and if the workpiece is processed with the grinding wheel, grinding burn is likely to occur.
そのため、 砥粒密度の低い砥石車を用いることで、 修正工具と接触す る砥粒を少なく して相対的に砥粒への接触圧を大きく し、 砥粒を充分に 破砕して鋭利な刃先を形成すると共に、 砥粒との接触を少なく して研削 熱の発生を抑制するようにしていた。 しかしながら、 この場合、 砥石車 の砥粒密度が低くワーク等と接触する砥粒が少ないので、 研削能率が悪 くなると共に、 砥石車の寿命が短いものとなる問題がある。 発明の開示  Therefore, by using a grinding wheel with a low abrasive density, the number of abrasive grains that come into contact with the correction tool is reduced, the contact pressure on the abrasive grains is relatively increased, and the abrasive grains are sufficiently crushed to sharpen the cutting edge. In addition, the contact with the abrasive grains was reduced to suppress the generation of grinding heat. However, in this case, there are problems that the grinding wheel has a low abrasive grain density and few abrasives come into contact with the workpiece, so that the grinding efficiency is deteriorated and the life of the grinding wheel is shortened. Disclosure of the invention
そこで、 本発明は、 上記の実状に鑑みてなされたものであり、 砥石車 の周面及び端面の切味を良く してワーク加工時に研削焼けが発生するの を抑制できる砥石車のツルーィング装置及びツルーィング方法の提供を 課題とする。 上記の課題を解決するために、 本発明に係る砥石車のツルーィング装 置は、 Therefore, the present invention has been made in view of the above-described situation, and a grinding wheel truing device capable of improving the sharpness of the peripheral surface and the end surface of the grinding wheel and suppressing occurrence of grinding burn during workpiece processing, and The issue is to provide a truing method. In order to solve the above problems, a truing device for a grinding wheel according to the present invention comprises:
「回転可能に支持された修正工具を備え、 該修正工具により回転する砥 石車を修正する砥石車のツルーィング装置であって、  “A grinding wheel truing device comprising a correction tool supported rotatably and correcting a grinding wheel rotated by the correction tool,
前記修正工具は、 回転周面がツルァ面とされた周面ツルァと、 回転軸 方向端面がツルァ面とされた端面ツルァとを有し、  The correction tool has a peripheral surface tool whose rotating peripheral surface is a truer surface, and an end surface tooler whose end surface in the rotation axis direction is a truer surface,
前記周面ツルァで前記砥石車の端面を修正し、 前記端面ツルァで前記 砥石車の周面を修正するように、 前記砥石車の回転軸に対して前記修正 工具の回転軸を略直交配置したことを特徴とする」 ものである。  The end surface of the grinding wheel is corrected with the circumferential surface tool, and the rotational axis of the correction tool is arranged substantially orthogonal to the rotational axis of the grinding wheel so that the peripheral surface of the grinding wheel is corrected with the end surface tool. It is characterized by that.
ここで、 「周面ツルァ」 としては、 「円盤形状のツルァ」 を例示する ことができる。 また、 「端面ツルァ」 としては、 「カップ型ツルァ」 、 「一つ又は複数の凸条を有したツルァ」 等を例示することができる。 ま た、 周面ツルァ及び端面ツルァは、 ダイヤモンド砥粒等を用いたもので あっても良いし、 柱状ダイヤモンドを用いたものであっても良い。 なお、 ツル一イングとは、 狭義のツル一イングと ドレッシングとの両 方を含む意味として使用する。 すなわち、 砥石車の形状を整える作業お よび表面状態を整える作業の両方を含めてツル一イングと名付ける。 ッ ルーイングとは、 例えば、 砥石車の外周面を所望の形状に整えることで あり、 ドレッシングとは砥石車の砥石面の表面状態を整えること、 すな わち、 目こぼれ、 目潰れ、 目詰り等を修復することである。 ところが、 実用現場用語として、 ツル一イングと ドレッシングとが厳密には区分さ れておらず、 例えばツル一イングするための機器も、 ドレッシングする ための機器も、 同様にツルーィング装置またはドレッシング装置と呼ん でいる。 これは、 砥石車をツル一イングしたならば同時にドレッシング も完了する場合があることによるものと考えられる。 本発明によると、 砥石車の回転軸に対して修正工具の回転軸を略直交 配置した上で、 砥石車の端面を周面ツルァでツル一イングし、 砥石車の 周面を端面ツルァでツル一イングするようにしたものである。 これによ り、 砥石車の端面及び周面ともに、 砥石車と修正工具との接触を点接触 若しくは線接触として接触面積を可及的に少なくすることが可能となり、 修正工具が必要以上に砥石車の砥粒を擦って砥粒の刃先が摩耗し刃先が 平坦になるのを防止すると共に、 砥石車との接触圧を大きくすることが できるので、 砥石車の砥粒を良好な状態に破砕して鋭利な刃先として、 砥石車の切味を向上させることができる。 Here, as the “circumferential surface tourer”, a “disk-shaped tourer” can be exemplified. Further, examples of the “end surface tourer” include “cup type tourer”, “tourer having one or more ridges”, and the like. Further, the peripheral surface and the end surface truers may be those using diamond abrasive grains or the like, or those using columnar diamonds. The word “truing” is used to mean both the narrow “truing” and the dressing. In other words, it is named “truing”, including both the work of adjusting the shape of the grinding wheel and the work of adjusting the surface condition. For example, “truing” means to adjust the outer peripheral surface of the grinding wheel to a desired shape, and “dressing” means to adjust the surface state of the grinding wheel surface of the grinding wheel, that is, spilled, clogged, clogged. Is to repair etc. However, as a practical term, tooling and dressing are not strictly separated. For example, a device for tooling and a device for dressing are also called truing devices or dressing devices. It is out. This is thought to be due to the fact that dressing may be completed at the same time if the grinding wheel is pulled. According to the present invention, the rotation axis of the correction tool is arranged substantially orthogonal to the rotation axis of the grinding wheel, the end surface of the grinding wheel is tooled with the circumferential tool, and the circumferential surface of the grinding wheel is tooled with the end surface tool. It is intended to be As a result, the contact area between the grinding wheel and the correction tool on both the end face and peripheral surface of the grinding wheel can be reduced as much as possible by making point contact or line contact. The wheel edge of the wheel is prevented from being worn and flattened by rubbing the abrasive grains of the car, and the contact pressure with the grinding wheel can be increased, so that the grinding wheel abrasive grains are crushed in good condition. As a sharp cutting edge, the sharpness of the grinding wheel can be improved.
従って、 ワーク等の加工時に研削焼けが発生するのを抑制することが できると共に、 研削熱の発生を抑制できるのでワークへの熱影響が少な くなり加工精度を向上させることができ、 特に、 ワークのフランジ部等 の端面に対するスラス ト研削やプランジ研削等の研削加工時に研削焼け が発生するのを抑制することができる。  Therefore, it is possible to suppress the occurrence of grinding burn during processing of the workpiece and the like, and also to suppress the generation of grinding heat, so that the thermal influence on the workpiece is reduced and the machining accuracy can be improved. It is possible to suppress the occurrence of grinding burn during grinding such as thrust grinding or plunge grinding on the end face of the flange portion of the steel.
また、 砥石車の砥粒をより鋭利な刃先とすることができるので、 研削 加工による砥粒の刃先の持ちを向上させることができ、 ツル一イングを 行う間隔 (ツル一イングイン夕一バル) がより長くなり、 研削盤の稼働 率を高めて生産効率を向上させることができる。  In addition, since the abrasive grains of the grinding wheel can be made sharper, the holding edge of the abrasive grains by grinding can be improved, and the interval for carrying out the tooling (tooling in the evening) is increased. It becomes longer and can improve the production efficiency by increasing the operating rate of the grinding machine.
更に、 砥石車との接触圧を大きくすることができるので、 ツル一イン グの際に従来と比較してより多くの砥粒と接触させることができ、 従来 よりも砥粒密度の高い砥石車を修正することができる。 つまり、 砥粒密 度のより高い砥石車を良好に修正することができるので、 砥粒密度の高 い砥石車を研削盤に装着して研削加工することが可能となり、 研削盤の 研削能率を向上させることができる。  In addition, since the contact pressure with the grinding wheel can be increased, it is possible to bring more abrasive grains into contact with the grinding wheel when compared with the conventional grinding wheel. Can be corrected. In other words, since the grinding wheel with higher abrasive density can be corrected satisfactorily, it becomes possible to attach a grinding wheel with high abrasive density to the grinding machine for grinding, and the grinding efficiency of the grinding machine can be improved. Can be improved.
また、周面ツルァと端面ツルァとを.有した修正工具を用いているので、 一つのツル一ィング装置で砥石車の端面と周面をツルーィングすること ができ、 ツルーィング装置に係るコス 卜が増加するのを抑制することが できると共に、 研削盤等に備えても研削盤が大型化するのを抑制するこ とができる。 また、 修正工具の回転軸が砥石車の回転軸に対して略直交 配置されているので、 ツルーィング装置を研削盤の主軸台等のワークテ —ブル側に備えた場合、 ワークテーブルの延びる方向と同じ方向に修正 工具の円盤形状の面が延びることとなり、 主軸台等からのツルーィング 装置の突出量を少なくすることができ、 研削盤の大型化を抑制すること ができる。 In addition, since a correction tool having a peripheral surface tool and an end surface tool is used, the end surface and the peripheral surface of the grinding wheel can be trued with a single tool. Therefore, it is possible to suppress an increase in cost associated with the truing device, and it is possible to suppress an increase in the size of the grinder even if the grinder is provided. In addition, since the rotation axis of the correction tool is arranged substantially perpendicular to the rotation axis of the grinding wheel, when the truing device is provided on the worktable side such as the headstock of the grinding machine, it is the same as the direction in which the worktable extends. The disk-shaped surface of the correction tool extends in the direction, and the amount of protrusion of the truing device from the headstock can be reduced, and the increase in size of the grinding machine can be suppressed.
本発明に係る砥石車のツル一イング装置は、 上記した構成に加えて、 「前記修正工具は、 前記端面ツルァの内径が前記砥石車の砥石幅よりも 大径であることを特徴とする」 ものである。 ここで、 「端面ツルァの内 径」 とは、 修正工具を回転させることで形成される端面ツルァの環状軌 跡の内径のことである。  In addition to the above-described configuration, the grinding machine for a grinding wheel according to the present invention is characterized in that "the correction tool has an inner diameter of the end surface truer larger than a grinding wheel width of the grinding wheel" Is. Here, the “inner diameter of the end face tool” is the inner diameter of the annular track of the end face tool formed by rotating the correction tool.
ところで、 上記のように砥石車の回転軸に対して修正工具の回転軸を 略直交配置して、 砥石車の周面を修正工具の端面ツルァでツル一イング するようにした場合、 砥石車と接触する端面ツルァの接触部分における 相対的な移動方向が、 修正工具の回転軸を挟んで左右で逆方向となるの で、 砥石車の周面を端面ツルァでツル一イングする際に、 修正工具の回 転軸を越えて反対側の接触部分と接触すると、 砥石車に対するツルーィ ング条件が大きく変わってしまい、 砥石車を最適な状態にツル一イング することが困難となる問題がある。  By the way, when the rotation axis of the correction tool is arranged substantially orthogonally to the rotation axis of the grinding wheel as described above, and the peripheral surface of the grinding wheel is tooled with the end surface tool of the correction tool, Since the relative moving direction of the contact part of the end surface tooler in contact is opposite to the left and right across the rotation axis of the correction tool, the tool is corrected when the peripheral surface of the grinding wheel is tooled with the end surface tool. If the wheel is in contact with the contact part on the opposite side beyond the rotation axis, the truing conditions for the grinding wheel will change significantly, making it difficult to true the grinding wheel to the optimum state.
本発明によると、 修正工具における端面ツルァの内径を、 修正する砥 石車の砥^幅よりも大径としており、 砥石車の周面を端面ツルァを用い て砥石車の軸方向に沿うように一方から他方へ向かってツルーィングし 終えた時に、 端面ツルァにおける回転軸を挟んで反対側の接触部分が、 砥石車の周面と接触するのを回避させることができるので、 砥石車のッ ルーィング中にそのツルーィング条件が大きく変わるのを防止すること ができ、 砥石車を最適な状態にツル一イングして、 上述と同様の作用効 果を確実に奏することができる。 According to the present invention, the inner diameter of the end surface tooler in the correction tool is larger than the grinding wheel width of the grinding wheel to be corrected, and the peripheral surface of the grinding wheel is aligned with the axial direction of the grinding wheel using the end surface tool. When the truing from one side to the other is finished, it is possible to prevent the contact portion on the opposite side across the rotation shaft of the end face tool from contacting the circumferential surface of the grinding wheel. It is possible to prevent the truing condition from changing greatly during the louing operation, and it is possible to reliably achieve the same effect as described above by truing the grinding wheel to the optimum state.
なお、端面ツルァの内径を Bとし、砥石車の砥石幅を T Wとした場合、 内径 Bと砥石幅 T Wとの関係は、 T W < B < 1 . 2 T W〜3 T W を満 たす範囲内とすることが望ましく、 これ以上端面ツルァの内径 Bを大き くすると、 ツルーィング装置が大型化してスペースゃコス 卜の面で不利 となるからである。  When the inner diameter of the end face tool is B and the grinding wheel width of the grinding wheel is TW, the relationship between the inner diameter B and the grinding wheel width TW is within the range satisfying TW <B <1.2 TW to 3 TW. This is because if the inner diameter B of the end surface tool is further increased, the truing device becomes larger and the space becomes disadvantageous in terms of cost.
本発明に係る砥石車のツルーィング装置は、 上記した構成に加えて、 「前記修正工具の前記端面ツルァは、 柱状ダイヤモンドであることを特 徴とする」 ものである。  In addition to the above-described configuration, the truing device for a grinding wheel according to the present invention is characterized in that “the end surface truer of the correction tool is a columnar diamond”.
ここで、 「柱状ダイヤモンド」 としては、 C V D法、 プラズマジエツ ト法、 火炎法等の公知の合成方法を用いて合成されたダイヤモンド膜を 柱状に形成した、 多結晶ダイヤモンドが望ましい。  Here, the “columnar diamond” is preferably a polycrystalline diamond in which a diamond film synthesized by a known synthesis method such as a CVD method, a plasma jet method, or a flame method is formed in a columnar shape.
ところで、 従来から修正工具には、 単結晶のダイヤモンドが多く用い られている。 しかしながら、 単結晶のダイヤモンドの場合、 大きく割れ 易いため、 割れ方によって修正工具の面形状が大きく変化し、 修正工具 のツルーィング性能が不安定となる問題がある。  By the way, single crystal diamond has been used for correction tools. However, since single crystal diamond is easy to crack large, there is a problem that the surface shape of the correction tool changes greatly depending on the cracking method and the truing performance of the correction tool becomes unstable.
本発明によると、 端面ツルァを多結晶の柱状ダイヤモンドを用いたも のとすることにより、 割れ方が微細で端面ツルァが略均一に減り、 ツル ァの面形状の変化を可及的に少なくすることができ、 ツルーィング性能 を安定させることができる。  According to the present invention, by using polycrystalline columnar diamond as the end surface truer, the cracking is fine and the end surface truer is reduced substantially uniformly, and the change in the surface shape of the truer is minimized. And truing performance can be stabilized.
なお、 端面ツルァには、 柱状ダイヤモンドを単数、 或いは複数用いて も良い。 また、 端面ツルァは、 柱状ダイヤモンドのみとしても良いし、 柱状ダイヤモンドを保持する保持部材を備えたものとしても良レ 更に、 周面ツルァに柱状ダイヤモンドを備えるようにしても良い。 本発明に係る砥石車のツルーィング方法は、 In addition, a single or a plurality of columnar diamonds may be used for the end surface truer. Further, the end surface truer may be only the columnar diamond, or may be provided with a holding member for holding the columnar diamond. Further, the peripheral surface truer may be provided with the columnar diamond. The truing method of the grinding wheel according to the present invention includes:
「砥石車の回転軸に対して、 回転周面がツルァ面とされた周面ツルァと 回転軸方向端面がツルァ面とされた端面ツルァとを有した修正工具の回 転軸を略直交するように配置し、 該修正工具の前記周面ツルァで前記砥 石車の端面を修正し、 前記端面ツルァで前記砥石車の周面を修正するこ とを特徴とする」 方法である。  “The rotation axis of the correction tool having a circumferential surface tool whose rotation surface is a true surface and an end surface tool whose rotation surface direction is a true surface is substantially perpendicular to the rotation axis of the grinding wheel. The end surface of the grinding wheel is corrected with the peripheral surface tool of the correction tool, and the peripheral surface of the grinding wheel is corrected with the end surface tool.
本発明によると、 上記した砥石車のツル一イング装置と同様の作用効 果を奏することができ、 砥石車の砥粒を良好な状態に破碎して鋭利な刃 先とすることができるので、 砥石車の周面及び端面の切味を良く してヮ ーク加工時に研削焼けが発生するのを抑制することができる。  According to the present invention, it is possible to achieve the same effect as that of the above-described grinding machine for a grinding wheel, and to break the abrasive grains of the grinding wheel into a good state to obtain a sharp cutting edge. It is possible to improve the sharpness of the peripheral surface and the end surface of the grinding wheel and to suppress the occurrence of grinding burn during the grinding process.
本発明に係る砥石車のツル一イング方法は、 上記した構成に加えて、 「前記砥石車の端面と周面との間に面取り部を備える場合、 前記砥石車 の回転軸方向に対して所定方向を一方側とすると共に反対方向を他方側 とすると、 該砥石車の一方側の前記面取り部を前記端面ツルァの他方側 で修正し、 前記砥石車の他方側の前記面取り部を前記端面ツルァの一方 側で修正し、 一方側の前記面取り部を修正する時と他方側の前記面取り 部を修正する時とで前記修正工具の回転方向を逆転させることを特徴と する」 方法である。 ここで、 「面取り部」 としては、 「断面が円弧状と された R部」 、 「断面が直線状とされた C部」 、 「断面が R部や C部以 外の形状とされた形状部」 、 等を例示することができる。  In addition to the above-described configuration, the grinding method for a grinding wheel according to the present invention includes the following: “When a chamfer is provided between the end surface and the peripheral surface of the grinding wheel, the predetermined direction with respect to the rotation axis direction of the grinding wheel” When the direction is one side and the opposite direction is the other side, the chamfered portion on one side of the grinding wheel is corrected on the other side of the end surface tool, and the chamfered portion on the other side of the grinding wheel is changed to the end surface truer. The method is characterized in that the rotation direction of the correction tool is reversed between when the one chamfered portion is corrected and when the other chamfered portion is corrected. Here, as the “chamfered part”, “the R part whose cross section is an arc shape”, “the C part whose cross section is a straight line”, “the shape whose cross section is a shape other than the R part and the C part” Part ", etc. can be illustrated.
本発明によると、 砥石車の両端に R部等の面取り部を形成したり、 面 取り部を修正したりする際に、 砥石車の両端で、 砥石車と修正工具の端 面ツルァとの相対的な移動方向が同じとなるようにしてツル一ィング条 件が変化しないようにしているので、上述した作用効果に加えて、更に、 砥石車の面取り部を良好な状態にツルーィングすることができる。 上述の通り本発明によると、 砥石車の周面及び端面の切味を良く して ワーク加工時に研削焼けが発生するのを抑制できる砥石車のツル一イン グ装置及びツルーィング方法を提供できる。 図面の簡単な説明 According to the present invention, when the chamfered portion such as the R portion is formed at both ends of the grinding wheel or the chamfered portion is corrected, the grinding wheel and the end face tool of the correction tool are relative to each other at both ends of the grinding wheel. In addition to the above-described effects, the chamfered portion of the grinding wheel can be further trued in a good state. . As described above, according to the present invention, it is possible to provide a grinding wheel tool and a truing method for a grinding wheel that can improve the sharpness of the peripheral surface and end face of the grinding wheel and suppress the occurrence of grinding burn during workpiece machining. Brief Description of Drawings
図 1 は本発明の砥石車のツルーィング装置の一例を適用した研削盤の 概略構成を示す平面図である。  FIG. 1 is a plan view showing a schematic configuration of a grinding machine to which an example of a truing device for a grinding wheel according to the present invention is applied.
図 2は図 1 に示す砥石車のツルーィング装置における修正工具を示す 拡大図である。  FIG. 2 is an enlarged view showing a correction tool in the truing apparatus of the grinding wheel shown in FIG.
図 3 Aは図 1 における砥石車のツルーィング装置の作動態様をツル一 ィング方法と共に示す説明図である。  FIG. 3A is an explanatory view showing an operation mode of the truing device of the grinding wheel in FIG. 1 together with a truing method.
図 3 Bは図 1 における砥石車のツルーィング装置の作動態様をツル一 ィング方法と共に示す説明図である。  FIG. 3B is an explanatory view showing an operation mode of the truing device for the grinding wheel in FIG. 1 together with a truing method.
図 4 Aは図 2に示した修正工具とは異なる形態の修正工具を示す平面 図である。  FIG. 4A is a plan view showing a correction tool having a different form from the correction tool shown in FIG.
図 4 Bは図 2に示した修正工具とは異なる形態の修正工具を示す平 面図である。  FIG. 4B is a plan view showing a correction tool having a different form from the correction tool shown in FIG.
図 5 Aは更に異なる形態の修正工具における端面ツルァの内径と砥石 車の砥石幅との関係を示す説明図である。  FIG. 5A is an explanatory diagram showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a correction tool of a different form.
図 5 Bは更に異なる形態の修正工具における端面ツルァの内径と砥 石車の砥石幅との関係を示す説明図である。  FIG. 5B is an explanatory diagram showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a modified tool of a different form.
図 6 Aは R部を備えた砥石車のツルーィング方法を示す説明図である。 図 6 Bは R部を備えた砥石車のツルーィング方法を示す説明図であ る。 発明を実施するための最良の形態 次に、 本発明に係る砥石車のツルーィング装置及びツルーィング方法 の一実施形態を、 図 1〜図 3 Bに基づいて詳細に説明する。 図 1は、 本 発明の砥石車のツルーィング装置の一例を適用した研削盤の概略構成を 示す平面図である。 図 2は、 図 1 に示す砥石車のツル一イング装置にお ける修正工具を示す拡大図である。 図 3 A及び図 3 Bは、 図 1 における 砥石車のツル一ィング装置の作動態様をツルーィング方法と共に示す説 明図である。 FIG. 6A is an explanatory view showing a truing method of the grinding wheel provided with the R portion. FIG. 6B is an explanatory view showing a truing method of the grinding wheel provided with the R portion. BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a truing device and a truing method for a grinding wheel according to the present invention will be described in detail with reference to FIGS. 1 to 3B. FIG. 1 is a plan view showing a schematic configuration of a grinding machine to which an example of a truing device for a grinding wheel of the present invention is applied. FIG. 2 is an enlarged view showing a correction tool in the crushing device of the grinding wheel shown in FIG. FIG. 3A and FIG. 3B are explanatory diagrams showing the operation mode of the grinding device for the grinding wheel in FIG. 1 together with the truing method.
図 1 に示すように、 本発明の一実施形態である砥石車のツル一イング 装置を適用した研削盤 1は、 基台部分を構成するベッ ド 2と、 ベッ ド 2 上に載置され砥石車 Tを回転駆動可能に支持する砥石台 3と、 砥石台 3 を X軸方向に移動させる X軸駆動装置 4と、 ベッ ド 2上の砥石台 3とは 異なる位置に載置されるワークテーブル 5と、 ワークテーブル 5上に載 置されワーク Wを支持すると共にワーク Wを回転駆動する主軸 6を有し た主軸台 7及び心押台 8 と、 ワークテーブル 5を Z軸方向に移動させる Z軸駆動装置 9 と、 主軸台 7に備えられ砥石車 Tを修正する修正工具 1 0を有したツルーィング装置 1 1 とを備えている。 なお、 X軸駆動装置 4及び Z軸駆動装置 9は、 夫々サーボモータや送りネジ等を用いて構成 された公知の駆動装置からなるものである。  As shown in FIG. 1, a grinding machine 1 to which a grinding wheel crane device according to an embodiment of the present invention is applied includes a bed 2 constituting a base portion, and a grinding wheel placed on the bed 2. Wheel table 3 that supports the vehicle T so that it can be rotated, X-axis drive device 4 that moves the wheel table 3 in the X-axis direction, and a work table that is placed at a position different from the wheel table 3 on the bed 2 5 and the headstock 7 and the tailstock 8 having the spindle 6 which is placed on the worktable 5 and supports the work W and rotationally drives the work W, and the worktable 5 is moved in the Z-axis direction. A shaft drive device 9 and a truing device 11 having a correction tool 10 for correcting the grinding wheel T provided on the head stock 7 are provided. The X-axis driving device 4 and the Z-axis driving device 9 are each composed of a known driving device configured using a servo motor, a feed screw, or the like.
砥石台 3は、 砥石車 Tが装着される砥石軸 1 2 と、 砥石軸 1 2を回転 可能に支持する軸頭 1 3と、 砥石軸 1 2を回転駆動させるためのモー夕 等からなる回転駆動装置 1 4とを備えている。 砥石車 Tは、 C B N砥石 等の適宜の砥石材料を用いて、 外周面及び外周面近傍の端面が研削面と なるように円盤形状に形成されたものであり、 砥石軸 1 2と共に回転駆 動装置 1 4により回転駆動されるものである。  The grinding wheel base 3 is composed of a grinding wheel shaft 1 2 on which the grinding wheel T is mounted, a shaft head 13 that rotatably supports the grinding wheel shaft 12, and a motor that rotates the grinding wheel shaft 12. And a drive unit 14. The grinding wheel T is formed in a disk shape using an appropriate grinding stone material such as a CBN grinding wheel so that the outer peripheral surface and the end surface near the outer peripheral surface become a grinding surface, and is driven to rotate together with the grinding wheel shaft 12. It is rotationally driven by the device 14.
修正工具 1 0は、 外周面がツルァ面とされた円盤形状の周面ツルァ 1 5と、 修正工具 1 0の回転軸方向に突出した端面がツルァ面とされた端 面ツルァ 1 6とを備えている。 本例では、 周面ツルァ 1 5は、 公知のダ ィャモンドメタルボンド層を有した円盤形状のダイヤモンドツルァとさ れている。 また、 端面ツルァ 1 6は、 直線状の凸条に形成された保持部 材 1 7 と、 保持部材 1 7に穿設された保持穴に埋込み保持された柱状ダ ィャモンド 1 8 とから構成されており、 柱状ダイヤモンド 1 8が保持部 材 1 7の端面から露出した状態とされている (図 2参照) 。 The corrective tool 10 includes a disk-shaped peripheral tool 15 whose outer peripheral surface is a truer surface, and an end of the corrective tool 10 whose end surface protrudes in the rotation axis direction is a truer surface. With a surface toura 1-6. In this example, the peripheral surface tour 15 is a disk-shaped diamond tour having a known diamond metal bond layer. Further, the end surface truer 16 is composed of a holding member 17 formed in a straight ridge and a columnar diamond 18 embedded and held in a holding hole formed in the holding member 17. The columnar diamond 18 is exposed from the end face of the holding member 17 (see Fig. 2).
この柱状ダイヤモンド 1 8は、 C V D法等の公知の合成方法を用いて 合成されたダイヤモンド膜を柱状に形成したものであり、 多結晶ダイヤ モンドとされている。 また、 保持部材 1 7は、 例えば金属等の適宜材料 を用いて形成されている。 なお、 本例では、 保持部材 1 7に二つの柱状 ダイヤモンド 1 8が埋込み保持されている。  The columnar diamond 18 is formed by forming a diamond film in a columnar shape using a known synthesis method such as a C VD method, and is a polycrystalline diamond. The holding member 17 is formed using an appropriate material such as metal. In this example, two columnar diamonds 18 are embedded and held in the holding member 17.
この修正工具 1 0を有したツル一イング装置 1 1は、 修正工具 1 0を 回転可能に支持すると共に、 修正工具 1 0の回転軸が砥石台 3に装着さ れた砥石車 Tの回転軸に対して略直交するように支持する工具台 1 9 と、 工具台 1 9に回転可能に支持された修正工具 1 0を回転駆動させるモー 夕等からなる回転駆動装置 (図示せず) とを更に備えている。  The clawing device 1 1 having the correction tool 1 0 rotatably supports the correction tool 1 0, and the rotation axis of the grinding wheel T on which the rotation axis of the correction tool 10 is mounted on the grinding wheel base 3. A tool base 19 that is supported so as to be substantially orthogonal to the tool base, and a rotary drive device (not shown) comprising a motor that rotates the correction tool 10 rotatably supported on the tool base 19. In addition.
また、 研削盤 1は、 X軸駆動装置 4、 主軸 6の回転駆動装置、 Z軸駆 動装置 9、 砥石車 Tの回転駆動装置 1 4、 ツル一イング装置 1 1の回転 駆動装置等を制御するための C N C制御装置 2 0を更に備えている。 こ の C N C制御装置 2 0は、 所定のプログラムを実行することで数値制御 によりワーク Wを加工したり、 砥石車 Tを修正したりすることができ、 C P U , R〇M、 R A M , ハードディスク等を有するコンピュータを用 いて構成されている。  In addition, the grinding machine 1 controls the X-axis drive device 4, the rotation drive device of the main shaft 6, the Z-axis drive device 9, the rotation drive device 14 of the grinding wheel T, the rotation drive device of the tooling device 1 1, etc. A CNC control device 20 is further provided. This CNC control unit 20 can process the workpiece W by numerical control and correct the grinding wheel T by executing a predetermined program. CPU, ROM, RAM, hard disk, etc. It is configured using the computer that has it.
次に、 本実施形態の研削盤 1 における砥石車 Tのツルーィング方法と ツル一イング装置 1 1の作動態様とを共に説明する。 砥石車 Tの端面を ツル一ィングする場合、 C N C制御装置 2 0により X軸駆動装置 4及び Z軸駆動装置 9を制御して砥石台 3及びワークテーブル 5を適宜移動さ せ、 修正工具 1 0における周面ツルァ 1 5の外周面を砥石車 Tの端面に 接触させる。 そして、 周面ツルァ 1 5を砥石車 Tの端面に所定量切込ま せた状態で、 砥石車 Tと修正工具 1 0 とを X軸方向に相対移動させるこ とで砥石車 Tの端面を周面ツルァ 1 5でツルーィングする(図 3 A参照) と共に、 この動作を所定回数繰り返す。 Next, the truing method of the grinding wheel T in the grinding machine 1 of the present embodiment and the operation mode of the truing device 11 will be described together. When grinding the end face of the grinding wheel T, the X-axis drive 4 and the CNC controller 20 The grinding wheel base 3 and the work table 5 are moved appropriately by controlling the Z-axis driving device 9 so that the outer peripheral surface of the peripheral tool 15 in the correction tool 10 is brought into contact with the end surface of the grinding wheel T. Then, the grinding wheel T and the correction tool 10 are moved relative to each other in the X-axis direction while the circumferential surface wheel 15 is cut into the end surface of the grinding wheel T by a predetermined amount. Truing with surface tooler 15 (see Fig. 3A) and repeat this action a predetermined number of times.
この砥石車 Tの端面ツルーィングでは、 砥石車 Tの端面と円盤形状の 周面ツルァ 1 5との接触部分が略点接触となるので、 周面ツルァ 1 5が 砥石車 Tの砥粒を擦って砥粒の刃先が摩耗して平坦になるのを防止する ことができ、 鋭利な刃先を有した砥粒が得られるようになつている。 なお、 砥石車 Tの端面ツル一イングにおいて、 一方側の端面ツルーィ ングと他方側の端面ツル一イングとで、 砥石車 T及び修正工具 1 0の何 れか一方の回転方向を逆方向に回転させてツルーィングするようにし、 砥石車 Tと修正工具 1 0 との接触部分の移動方向が同じ方向となるよう にする。  In the end surface truing of the grinding wheel T, the contact portion between the end surface of the grinding wheel T and the disk-shaped circumferential surface tool 15 becomes a substantially point contact, so the peripheral surface tool 15 rubs the abrasive grains of the grinding wheel T. It is possible to prevent the abrasive blade edge from being worn and flattened, and to obtain an abrasive having a sharp blade edge. In addition, in the end surface truing of the grinding wheel T, either the end surface truing on one side or the end surface truing on the other side rotates either the grinding wheel T or the correction tool 10 in the opposite direction. Truing to make the moving direction of the contact part between the grinding wheel T and the correction tool 10 the same direction.
また、 砥石車 Tの周面をツル一イングする場合、 C N C制御装置 2 0 により X軸駆動装置 4及び Z軸駆動装置 9を制御して砥石台 3及びヮー クテーブル 5を適宜移動させ、 修正工具 1 0における端面ツルァ 1 6の 端面を砥石車 Tの外周面に接触させる。 そして、 端面ツルァ 1 6を砥石 車 Tの周面に所定量切込ませた状態で、 砥石車 Tと修正工具 1 0とを Z 軸方向に相対移動させることで砥石車 Tの周面を端面ツルァ 1 6でツル —イングする (図 3 B参照) と共に、 この動作を所定回数繰り返す。  Also, when grinding the grinding wheel T, the CNC controller 2 0 controls the X-axis drive 4 and Z-axis drive 9 to move the grinding wheel base 3 and the work table 5 as appropriate. The end surface of the end surface tool 16 in the tool 10 is brought into contact with the outer peripheral surface of the grinding wheel T. Then, with the end surface tool 16 cut into the peripheral surface of the grinding wheel T by a predetermined amount, the peripheral surface of the grinding wheel T is moved to the end surface by moving the grinding wheel T and the correction tool 10 relative to each other in the Z-axis direction. Touring with Toura 1 6 (see Figure 3B) and repeating this action a predetermined number of times.
この砥石車 Tの周面ツルーィングでは、 砥石車 Tの周面と端面ツルァ 1 6 との接触部分が略線接触となるが、 端面ツルァ 1 6の回転方向に対 して略直角方向に延びる線接触となるので、 端面ツルァ 1 6が砥石車 T の砥粒を必要以上に擦って砥粒の刃先が摩耗して平坦になるのを防止す ることができると共に、 点接触よりも接触圧を大きく して砥石車 Tの砥 粒を良好な状態に破砕して鋭利な刃先が得られるようになっている。 なお、 本実施形態では、 周面ツルァ 1 5による砥石車 Tの端面ツル一 イングの際の切込み量が 2〜 3 ; m、繰り返し回数が 5〜 1 0回であり、 端面ツルァ 1 6による砥石車 Tの周面ツルーィングの際の切込み量が直 径で約 5 / m、 繰り返し回数が 4〜 5回である。 また、 砥石車の端面を 力ップ型ツルァでツルーィングする従来のツルーィング装置で修正した 砥石車と、 本実施形態のツル一イング装置 1 1で修正した砥石車 Tとを 比較したところ、 研削能率で約 1 0倍、 ツルーィングイン夕ーバルで約 2 0倍、 夫々向上した。 In the circumferential truing of the grinding wheel T, the contact portion between the circumferential surface of the grinding wheel T and the end surface tool 16 is substantially linear contact, but a line extending in a direction substantially perpendicular to the rotational direction of the end surface tool 16. The end surface tool 16 rubs the abrasive grains of the grinding wheel T more than necessary to prevent the abrasive blade edges from being worn and flattened. In addition, it is possible to obtain a sharp cutting edge by crushing the abrasive grains of the grinding wheel T in a good condition by increasing the contact pressure more than the point contact. In the present embodiment, the cutting amount when grinding the end face of the grinding wheel T by the circumferential surface tool 15 is 2 to 3; m, the number of repetitions is 5 to 10 times, and the grinding wheel by the end face tool 16 is used. The cutting depth when cruising the surface of the car T is about 5 / m in diameter and the number of repetitions is 4-5 times. In addition, a comparison of the grinding wheel modified with the conventional truing device that truws the end face of the grinding wheel with a force-pull type tool and the grinding wheel T modified with the truing device 11 of the present embodiment shows a grinding efficiency. It was about 10 times higher, and the truing-in evening was about 20 times higher.
このように、 本実施形態の砥石車のツル一イング装置 1 1及びツル一 イング方法によると、 砥石車 Tの回転軸に対して修正工具 1 0の回転軸 を略直交配置した上で、 砥石車 Tの端面を周面ツルァ 1 5でツル一イン グし、 砥石車 Tの周面を端面ツルァ 1 6でツル一イングするようにして おり、 砥石車 Tの端面及び周面ともに、 砥石車 Tと修正工具 1 0 との接 触を点接触若しくは線接触として接触面積を可及的に少なくすることが 可能となり、 修正工具 1 0が必要以上に砥石車 Tの砥粒を擦って砥粒の 刃先が摩耗し刃先が平坦になるのを防止すると共に、 接触圧を大きくす ることができるので、 砥石車 Tの砥粒を良好な状態に破砕して鋭利な刃 先とすることができ、 砥石車 Tの切味を向上させることができる。  As described above, according to the crushing device 11 and the clawing method of the grinding wheel of the present embodiment, after the rotational axis of the correction tool 10 is arranged substantially orthogonal to the rotational axis of the grinding wheel T, the grinding wheel The end surface of the wheel T is twisted with the peripheral surface wheel 15 and the peripheral surface of the grinding wheel T is ground with the end surface tool 16, and both the end surface and the peripheral surface of the grinding wheel T are ground. The contact area between T and the correction tool 10 can be reduced as much as possible by making point contact or line contact, and the correction tool 10 can rub the abrasive grains of the grinding wheel T more than necessary. The blade edge can be prevented from being worn and flattened, and the contact pressure can be increased, so that the abrasive grains of the grinding wheel T can be crushed into a good state to make a sharp edge. The sharpness of the grinding wheel T can be improved.
従って、 ワーク W等の加工時に研削焼けが発生するのを抑制すること ができると共に、 研削熱の発生を抑制できるのでワーク Wへの熱影響が 少なくなり加工精度を向上させることができ、 特に、 ワーク Wのフラン ジ部等の端面に対するスラス ト研削やプランジ研削等の研削加工時に研 削焼けが発生するのを抑制することができる。 また、 砥石車 Tの砥粒をより鋭利な刃先とすることができるので、 研 削加工による砥粒の刃先の持ちを向上させることができ、 ツル一イング を行う間隔 (ツル一イングインターバル) がより長くなり、 研削盤 1の 稼働率を高めて生産効率を向上させることができる。 また、 砥石車丁と 修正工具 1 0 との接触圧を大きくすることができるので、 ツル一イング の際に従来と比較してより多くの砥粒と接触させることができ、 従来よ りも砥粒密度の高い砥石車 Τを修正することができる。 つまり、 砥粒密 度のより高い砥石車 Τを良好に修正することができるので、 砥粒密度の 高い砥石車 Τを研削盤 1 に装着して研削加工することが可能となり、 研 削盤 1の研削能率を向上させることができる。 Therefore, it is possible to suppress the occurrence of grinding burn during processing of the workpiece W, etc., and also to suppress the generation of grinding heat, so that the thermal influence on the workpiece W can be reduced and the processing accuracy can be improved. It is possible to suppress the occurrence of grinding burn during grinding such as thrust grinding and plunge grinding of the end face of the workpiece W flange. In addition, since the abrasive grains of the grinding wheel T can be made to have a sharper cutting edge, it is possible to improve the holding of the cutting edge of the abrasive grains by grinding, and the interval for carrying out the tooling (tooling interval) is increased. It becomes longer, and the operating rate of the grinding machine 1 can be increased to improve production efficiency. In addition, since the contact pressure between the grinding wheel cutter and the correction tool 10 can be increased, more abrasive grains can be brought into contact with the grinding tool than before. A grinding wheel with high grain density can be corrected. In other words, since the grinding wheel wheel with higher abrasive density can be corrected satisfactorily, it becomes possible to mount the grinding wheel wheel with higher abrasive density on the grinding machine 1 for grinding. The grinding efficiency can be improved.
更に、 周面ツルァ 1 5と端面ツルァ 1 6 とを有した修正工具 1 0を用 いているので、 一つのツル一イング装置 1 1で砥石車 Τの端面と周面を ツル一ィングすることができ、 ツルーィング装置 1 1に係るコス 卜が増 加するのを抑制することができると共に、 研削盤 1が大型化するのを抑 制することができる。 また、 修正工具 1 0の回転軸が砥石車 Τの回転軸 に対して略直角に配置されているので、 ワークテーブル 5の延びる方向 と同じ方向に修正工具 1 0の円盤形状の周面ツルァ 1 5の面が延び、 主 軸台 7からのツルーィング装置 1 0の突出量を少なくすることができ、 研削盤 1の大型化を抑制することができる。  Further, since the correction tool 10 having the peripheral surface tool 15 and the end surface tool 16 is used, it is possible to tool the end surface and the peripheral surface of the grinding wheel with a single tooling device 11. In addition, it is possible to suppress an increase in cost associated with the truing device 11 and to suppress an increase in the size of the grinding machine 1. In addition, since the rotation axis of the correction tool 10 is arranged substantially perpendicular to the rotation axis of the grinding wheel, the disk-shaped circumferential surface tool 1 of the correction tool 10 extends in the same direction as the work table 5 extends. The surface of 5 extends and the amount of protrusion of the truing device 10 from the headstock 7 can be reduced, and the increase in size of the grinding machine 1 can be suppressed.
また、 端面ツルァ 1 6を多結晶の柱状ダイヤモンド 1 8を用いたもの としているので、 割れ方が微細で端面ツルァ 1 6が略均一に減り、 その 面形状の変化を可及的に少なくすることができ、 ツルーィング性能を安 定させることができる。  In addition, since the end surface truer 16 is made of polycrystalline columnar diamond 18, the cracking is fine and the end surface truer 16 is reduced substantially uniformly, and the change in the surface shape is minimized. And truing performance can be stabilized.
なお、 上記実施形態では、 修正工具 1 0における端面ツルァ 1 6力 直線状に形成された凸条の保持部材 1 7に柱状ダイヤモンド 1 8が埋込 み保持されたものを示したが、 これに限定するものではなく、 様々な形 状の保持部材に柱状ダイヤモンド 1 8を埋込み保持したものであっても 良い。 具体的には、 図 4 Aに示すような、 直線状で凸条の保持部材 2 5 を、修正工具 1 0の回転中心から離れた位置で法線方向に延びるように、 周方向に複数備えて、 夫々の保持部材 2 5に柱状ダイヤモンド 1 8を埋 込み保持したものや、 図 4 Bに示すような、 カップ型に形成された保持 部材 2 6に複数の柱状ダイヤモンド 1 8を埋め込み保持したもの等であ つても良く、 上記と同様の作用効果を奏することができる。 In the above-described embodiment, the end surface truer 16 6 force in the correction tool 10 is shown in which the columnar diamond 18 is embedded and held in the convex holding member 17 formed linearly. Not limited, various shapes A cylindrical holding member embedded with columnar diamond 18 may be used. Specifically, as shown in FIG. 4A, a plurality of linear and convex holding members 25 are provided in the circumferential direction so as to extend in the normal direction at positions away from the rotation center of the correction tool 10. Each holding member 25 is embedded and held with columnar diamonds 18 or a plurality of columnar diamonds 18 are embedded and held in a cup-shaped holding member 26 as shown in Fig. 4B. It may be a thing etc., and there can exist an effect similar to the above.
次に、 上記した実施形態とは異なる形態の修正工具 3 0 と、 その修正 工具 3 0を用いた砥石車 Tのツルーィング方法について、 図 5 A乃至図 6 Bに基づいて詳細に説明する。 図 5 A及び図 5 Bは、 更に異なる形態 の修正工具における端面ツルァの内径と砥石車の砥石幅との関係を示す 説明図である。 また、 図 6 A及び図 6 Bは、 R部を備えた砥石車のツル 一イング方法を示す説明図である。  Next, the correction tool 30 having a different form from the above-described embodiment and the truing method of the grinding wheel T using the correction tool 30 will be described in detail with reference to FIGS. 5A to 6B. FIG. 5A and FIG. 5B are explanatory views showing the relationship between the inner diameter of the end surface truer and the grinding wheel width of the grinding wheel in a correction tool of a further different form. FIG. 6A and FIG. 6B are explanatory views showing a method for crushing a grinding wheel equipped with an R portion.
本実施形態の修正工具 3 0は、 図 5 A乃至図 6 Bに示すように、 図 4 Bに示した修正工具 1 0 と略同様の形態であり、 円盤形状の周面ツルァ 3 1 と円筒カップ型の端面ツルァ 3 2 とで構成されている。 この修正ェ 具 3 0は、 本例では、 周面ツルァ 3 1及び端面ツルァ 3 2力 ダイヤモ ンドツルァとされている。 なお、 図 5 A乃至図 6 Bでは、 便宜上、 端面 ツルァ 3 2のみ断面で示してある。  As shown in FIGS. 5A to 6B, the correction tool 30 according to the present embodiment has substantially the same form as the correction tool 10 shown in FIG. 4B. It is composed of a cup-shaped end surface tour 3 2. In this example, the correction tool 30 is a peripheral surface trough 31 and an end surface trough 3 2 force diamond tour. In FIG. 5A to FIG. 6B, for convenience, only the end face truer 32 is shown in cross section.
この修正工具 3 0は、 図示するように、 端面ツルァ 3 2の内径 Bが、 砥石車 Tの砥石幅 T Wよりも大径とされている。 なお、 端面ツルァ 3 2 の内径 Bは、 T W < Bく 1 . 2 T W〜 3 T W を満たす範囲内とするこ とが望ましい。 また、 修正工具 3 0を、 図 4 Bに示したものと同様に、 端面ツルァ 3 2に柱状ダイヤモンドを保持したものとしても良い。  In this correction tool 30, the inner diameter B of the end surface truer 32 is larger than the grinding wheel width TW of the grinding wheel T as shown in the figure. Note that the inner diameter B of the end face truer 3 2 is preferably in a range satisfying T W <B and 1.2 T W to 3 T W. Further, the correction tool 30 may be a tool in which a columnar diamond is held on the end face truer 32 as in the case shown in FIG. 4B.
続いて、 修正工具 3 0を用いた砥石車 Tのツル一イング方法について 説明する。 この修正工具 3 0は、 例えば、 図 1 に示した研削盤 1のツル —イング装置 1 1 に装着された修正工具 1 0に代えて用いるものである。 なお、 砥石車 Tの端面ツル一イングについては、 上述の修正工具 1 0に よるツル一イングと同じでありここでは説明を省略する。 Next, a method for crushing the grinding wheel T using the correction tool 30 will be described. This correction tool 30 is, for example, a vine of the grinding machine 1 shown in FIG. — Used in place of the correction tool 10 attached to the inching device 1 1. Note that the end surface clawing of the grinding wheel T is the same as the clawing by the correction tool 10 described above, and a description thereof will be omitted here.
この修正工具 3 0を用いて砥石車 Tの周面をツルーィングする場合、 修正工具 3 0を回転させると、 端面ツルァ 3 2における修正工具 3 0の 回転軸を挟んだ両端側が、砥石車 Tの周面と接触可能な接触部分となる。 そして、 端面ツルァ 3 2のそれら接触部分の移動方向は、 回転軸を挟ん で互いに逆方向となるので、 砥石車 Tの回転により砥石車 Tの接触部分 が移動する方向と、 同じ方向に移動する端面ツルァ 3 2の接触部分を用 いて、 砥石車 Tの周面をツル一イングする。  When truing the peripheral surface of the grinding wheel T using this correction tool 30, when the correction tool 30 is rotated, both end sides of the end surface truer 3 2 with the rotation axis of the correction tool 30 are sandwiched by the grinding wheel T. It becomes a contact part which can contact with a surrounding surface. Since the movement directions of the contact portions of the end surface truer 32 are opposite to each other across the rotation shaft, the rotation of the grinding wheel T moves in the same direction as the contact portion of the grinding wheel T moves. Use the contact part of end face truer 3 2 to crush the peripheral surface of grinding wheel T.
具体的には、 図 5 Aに示すように、 例えば、 砥石車 Tの接触部分が紙 面において上方へ移動するように回転させると共に、 端面ツルァ 3 2を 備えた修正工具 3 0を紙面において反時計回りに回転させた場合、 端面 ツルァ 3 2の図中右側の接触部分が砥石車 Tの移動方向と同じ方向とな るので、 端面ツルァ 3 2の左側の接触部分が砥石車 Tの周面と接触しな いように、 砥石台 3及びワークテーブル 5を適宜移動させて、 端面ツル ァ 3 2の右側の接触部分で砥石車 Tの周面をツルーィングする。  Specifically, as shown in FIG. 5A, for example, the contact portion of the grinding wheel T is rotated so as to move upward on the paper surface, and the correction tool 30 provided with the end surface tour 32 is turned on the paper surface. When rotated clockwise, the contact portion on the right side of the end face truer 3 2 is the same as the direction of movement of the grinding wheel T, so the left side contact portion of the end face truer 3 2 is the circumferential surface of the grinding wheel T. The grinding wheel base 3 and the work table 5 are appropriately moved so as not to come into contact with the wheel, and the peripheral surface of the grinding wheel T is trued at the contact portion on the right side of the end face tool 32.
なお、 図 5 Bに示すように、 端面ツルァ 3 2の内径 B力 砥石車丁の 砥石幅 T Wよりも大径とされているので、 砥石車 Tの周面ツルーィング によって砥石車 Tが端面ツルァ 3 2の内側に移動しても、 砥石車 Tの周 面が、端面ツルァ 3 2の左側の接触部分と接触しないようになっている。 また、 C N C制御装置 2 0によって、 端面ツルァ 3 2の左側つまり反対 側の接触部分が砥石車 Tの周面と接触しないように、 砥石車 Tと端面ッ ルァ 3 2の相対移動を制御するようになっている。  As shown in Fig. 5B, since the inner diameter B force of the end face truer 3 2 is larger than the grinding wheel width TW of the grinding wheel, the grinding wheel T is moved to the end face truer by the circumferential truing of the grinding wheel T. Even if the wheel moves to the inside of 2, the peripheral surface of the grinding wheel T does not come into contact with the contact portion on the left side of the end surface tour 32. Also, the CNC controller 20 controls the relative movement of the grinding wheel T and the end surface pulley 3 2 so that the contact portion on the left side, that is, the opposite side of the end surface pulley 3 2 does not contact the peripheral surface of the grinding wheel T. It has become.
次に、 図 6 A及び図 6 Bに示すように、 砥石車 Tの端面と周面との間 に面取り部としての R部 3 3を形成する場合、 砥石車 Tの図中左側の R 部 3 3に対しては、 端面ツルァ 3 2の右側の接触部分を接触させてツル 一イングする (図 6 A参照) 。 一方、 砥石車 Tの図中右側の R部 3 3に 対しては、 端面ツルァ 3 2 (修正工具 3 0 ) の回転方向を逆転させて端 面ツルァ 3 2の左側の接触部分の移動方向を砥石車 Tの接触部分の移動 方向と同じ方向とした上で、 端面ツルァ 3 2の左側の接触部分を接触さ せてツル一イングする (図 6 B参照) 。 Next, as shown in FIGS. 6A and 6B, when an R portion 33 as a chamfered portion is formed between the end face and the peripheral surface of the grinding wheel T, the left side R in the drawing of the grinding wheel T is shown. The part 33 is brought into contact with the right side contact portion of the end surface truer 32, and the tool is attached (see FIG. 6A). On the other hand, for the R section 3 3 on the right side of the grinding wheel T in the figure, the direction of movement of the contact portion on the left side of the end face tool 3 2 is changed by reversing the rotation direction of the end face tool 3 2 (correcting tool 30). Set the same direction as the moving direction of the contact part of the grinding wheel T, and contact the contact part on the left side of the end face tool 32 to make it a tool (see Fig. 6B).
なお、上記した砥石車 Tにおける R部 3 3のツルーィングにおいても、 C N C制御装置 2 0によって X軸駆動装置 4及び Z軸駆動装置 9を制御 して砥石台 3及びワークテーブル 5を適宜移動させて、 所望の R形状と なるようにしている。  In the truing of the R portion 33 in the grinding wheel T described above, the grinding wheel base 3 and the work table 5 are appropriately moved by controlling the X-axis driving device 4 and the Z-axis driving device 9 by the CNC control device 20. The desired R shape is achieved.
このように、 本実施形態の砥石車のツル一イング装置 1 1及びツル一 ィング方法によると、 端面ツルァ 3 2の内径 Bを砥石車の砥石幅 T Wよ りも大径とすると共に、端面ツルァ 3 2を用いてツル一イングする際に、 端面ツルァ 3 2における反対側の接触部分が砥石車 Tと接触しないよう にしているので、 砥石車 Tのツル一イング中にそのツル一イング条件が 大きく変わるのを防止することができ、 砥石車 Tを最適な状態にツル一 イングすることができる。  Thus, according to the grinding machine tool 11 and the grinding method of the grinding wheel of this embodiment, the inner diameter B of the end face tool 32 is made larger than the grinding wheel width TW of the grinding wheel, and the end face tooling is performed. 3 When the tool is tapped with 2 2, the contact part on the opposite side of the end surface tooler 3 2 is not in contact with the grinding wheel T. It is possible to prevent a large change, and to grind the grinding wheel T to the optimum state.
また、 砥石車 Tの両端の R部 3 3をツル一イングする際に、 砥石車 T と端面ツルァ 3 2の接触部分の相対的な移動方向が左右で同じ方向とな るようにして、 左右の R部 3 3でツル一イング条件が変化しないように しているので、 砥石車 Tの R部 3 3を良好な状態にツル一イングするこ とができる。  Also, when the R section 33 at both ends of the grinding wheel T is touring, the relative movement direction of the contact portion between the grinding wheel T and the end surface truer 3 2 is the same in the left and right directions. Since the truing conditions are not changed in the R section 33 of the wheel, the R section 33 of the grinding wheel T can be crushed in a good condition.
以上、本発明を実施するための最良の実施の形態を挙げて説明した力 本発明はこの実施の形態に限定されるものではなく、以下に示すように、 本発明の要旨を逸脱しない範囲において、 種々の改良及び設計の変更が 可能である。 すなわち、本実施形態では、修正工具 1 0における端面ツルァ 1 6に、 柱状ダイヤモンド 1 8を備えたもの示したが、 これに限定するものでは なく、 周面ツルァ 1 5と同様のダイヤモンド砥粒を用いたものとしても 良い。 また、 周面ツルァ 1 5に柱状ダイヤモンドを埋込んでも良い。 こ れらによっても、 上記と同様の作用効果を奏することができる。 The power described with reference to the best mode for carrying out the present invention has been described above. The present invention is not limited to this embodiment, and as described below, it does not depart from the gist of the present invention. Various improvements and design changes are possible. That is, in the present embodiment, the end surface truer 16 of the correction tool 10 is provided with the columnar diamond 18, but the present invention is not limited to this, and diamond abrasive grains similar to the peripheral surface truer 15 are used. It may be used. Further, columnar diamond may be embedded in the peripheral surface tour 15. Also by these, the same operational effects as described above can be obtained.
また、 本実施形態では、 円筒を研削する研削盤 1 に適用したものを示 したが、 これに限定するものではなく、 例えば、 クランクシャフ ト等を 研削する C 一 X軸同期ピン研削盤、 ねじ研削盤、 内面研削盤等、 種々の 研削盤に適用することができ、 フランジ部等の端面の研削加工を必要と するワークを研削する研削盤に適用することが望ましい。  In the present embodiment, the present invention is applied to the grinding machine 1 that grinds the cylinder. However, the present invention is not limited to this. For example, a C 1 X-axis synchronous pin grinding machine, a screw that grinds a crankshaft, etc. It can be applied to various grinding machines such as grinding machines and internal grinding machines, and it is desirable to apply it to grinding machines that grind workpieces that require grinding of end faces such as flanges.

Claims

請 求 の 範 囲 1 . 砥石車を修正するツル一イング装置は、 Scope of request 1. The crane device for correcting the grinding wheel is
回転可能に支持され、前記回転する砥石車を修正する修正工具を備え、 前記修正工具は、 回転周面がツルァ面とされた周面ツルァと、 回転軸 方向端面がツルァ面とされた端面ツルァとを有し、  The correction tool is rotatably supported and includes a correction tool for correcting the rotating grinding wheel. The correction tool includes a peripheral surface torquer whose rotation peripheral surface is a truer surface, and an end surface truer whose end surface in the rotation axis direction is a truer surface. And
前記周面ツルァで前記砥石車の端面を修正し、 前記端面ツルァで前記 砥石車の周面を修正するように、 前記砥石車の回転軸に対して前記修正 工具の回転軸を略直交配置する。  The end surface of the grinding wheel is corrected with the circumferential surface tool, and the rotational axis of the correction tool is arranged substantially orthogonal to the rotational axis of the grinding wheel so that the peripheral surface of the grinding wheel is corrected with the end surface tool. .
2 . 前記修正工具は、 前記端面ツルァの内径が前記砥石車の砥石幅 よりも大径であることを特徴とする請求項 1 に記載の砥石車のツルーィ ング装置。  2. The grinding wheel truing apparatus according to claim 1, wherein the correction tool has an inner diameter of the end surface truer larger than a grinding wheel width of the grinding wheel.
3 . 前記修正工具の前記端面ツルァは、 柱状ダイヤモンドであるこ とを特徴とする請求項 1又は請求項 2に記載の砥石車のツルーィング装 置。 .  3. The truing apparatus for a grinding wheel according to claim 1 or 2, wherein the end surface tool of the correction tool is a columnar diamond. .
4 . 砥石車を修正するツル一イング方法は、  4. The way to fix the grinding wheel is
前記砥石車の回転軸に対して、 回転周面がツルァ面とされた周面ツル ァと回転軸方向端面がツルァ面とされた端面ツルァとを有した修正工具 の回転軸を略直交するように配置する工程と、  The rotation axis of the correction tool having a peripheral surface tool whose rotation surface is a true surface and an end surface tool whose rotation surface direction is a true surface is substantially orthogonal to the rotation axis of the grinding wheel. A process of arranging in
該修正工具の前記周面ツルァで前記砥石車の端面を修正し、 前記端面 ツルァで前記砥石車の周面を修正する工程と  Correcting the end face of the grinding wheel with the peripheral tool of the correction tool, and correcting the peripheral face of the grinding wheel with the end face tool;
を含む。  including.
5 . 前記砥石車の端面と周面との間に面取り部を備える場合、 前記 砥石車の回転軸方向に対して所定方向を一方側とすると共に反対方向を 他方側とすると、 該砥石車の一方側の前記面取り部を前記端面ツルァの 他方側で修正し、 前記砥石車の他方側の前記面取り部を前記端面ツルァ の一方側で修正し、 一方側の前記面取り部を修正する時と他方側の前記 面取り部を修正する時とで前記修正工具の回転方向を逆転させることを 特徴とする請求項 4に記載の砥石車のツル一イング方法。 5. When a chamfer is provided between the end surface and the peripheral surface of the grinding wheel, if the predetermined direction is one side and the opposite direction is the other side with respect to the rotational axis direction of the grinding wheel, The chamfered portion on one side is corrected on the other side of the end surface truer, and the chamfered portion on the other side of the grinding wheel is corrected on the end surface truer. 5. The rotation direction of the correction tool is reversed between when correcting the chamfered portion on one side and when correcting the chamfered portion on the other side. How to grind the grinding wheel.
PCT/JP2006/326378 2005-12-28 2006-12-27 Truing device and truing method for grinding wheel WO2007077964A1 (en)

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US20090280726A1 (en) 2009-11-12
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EP1974860A1 (en) 2008-10-01
JP5018058B2 (en) 2012-09-05

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