JP2016198836A - Grinding apparatus, and manufacturing method of grinding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control easily clogging of a blowout channel in a grinding apparatus having a grindstone member attached thereto and having the blowout channel for blowing out a grinding liquid therethrough from the inner peripheral side to the outer peripheral side.SOLUTION: A grinding apparatus 1 includes a rotary shaft part 11 inserted into the inner periphery of a grindstone member 2, for driving rotatively a grindstone member, a pump 12 for supplying a grinding liquid into a blowout channel, a detector 13 for detecting at least a discharge flow rate of the grinding liquid discharged from the pump, and an output part 14 for outputting an alarm for showing clogging of the blowout channel according to the output from the detector.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grinding apparatus and a method for manufacturing a grinding apparatus.

Some conventional grinding apparatuses grind a work material by bringing the work material (workpiece) into contact with the outer peripheral surface of the grindstone while rotating a circular or annular grindstone.
In this type of grinding apparatus, for example, as in Patent Document 1, when grinding a work material, a grinding liquid is ejected radially from the inner peripheral side of the grindstone to the outer peripheral side, and the outer peripheral surface of the grindstone and the work material Allow the ground surface to cool. This prevents grinding burn from occurring on the work material during grinding.

JP 2010-284791 A

By the way, in the said conventional grinding apparatus, the ejection flow path of the grinding fluid which flows toward the outer peripheral side from the inner peripheral side of a grindstone may be clogged with the abrasive grains of a grindstone, or the cuttings of a workpiece. In this case, since the cooling of the outer peripheral portion of the grindstone and the grinding surface of the work material that are in contact with each other is insufficient, if the grinding of the work material is continued in a state where the ejection channel is clogged, the grinding burn of the work material There is a problem that occurs.
In Patent Document 1, the grinding liquid is ejected from the inner peripheral side to the outer peripheral side of the grindstone at a high pressure to prevent clogging of the grindstone surface, but it is difficult to completely prevent clogging of the ejection passage. For this reason, it is necessary to manage clogging of the ejection flow path.

  An object of the present invention made there is to provide a grinding apparatus and a manufacturing method of the grinding apparatus that can easily manage clogging of the ejection flow path.

  A grinding device as one aspect according to the present invention is a grinding device to which a grindstone member having an ejection flow path for ejecting a grinding liquid from an inner circumferential side to an outer circumferential side is attached, and the inner circumference of the grinding stone member A rotary shaft portion that is fitted in the rotary shaft and rotationally drives the grindstone member, a pump that supplies the grinding liquid to the ejection flow path, and a detector that detects at least a discharge flow rate of the grinding liquid discharged from the pump; And an output unit that outputs an alarm indicating that the ejection flow path is clogged or a command based on the clogging of the ejection flow path in accordance with an output from the detector.

  According to the grinding apparatus having the above-described configuration, when the workpiece is ground, whether the ejection flow path of the grindstone member is clogged by detecting at least the discharge flow rate of the grinding liquid discharged from the pump by the detection unit. It becomes possible to determine whether or not. Further, according to the output from the detector, an alarm indicating that the ejection flow path of the grindstone member is clogged or a command based on the clogging of the ejection flow path is output from the output unit. It is possible to easily manage clogging of the flow path.

  In the grinding apparatus, the detector detects the discharge pressure of the grinding fluid discharged from the pump, and controls the operation of the pump so that the discharge pressure output from the detector is kept constant. A pump control unit configured to output the alarm or the command when the discharge flow rate output from the detector becomes a predetermined value or less.

  According to the grinding apparatus having the above configuration, since the discharge pressure of the grinding liquid discharged from the pump is kept constant, the detector detects that the discharge flow rate of the grinding liquid discharged from the pump has become a predetermined value or less. By doing so, it is possible to correctly determine clogging of the ejection flow path. Thereby, the output unit can output a highly reliable alarm or command regarding the clogging of the ejection flow path.

  In the grinding apparatus, the detector detects the discharge pressure of the grinding fluid discharged from the pump, and the pump operates so that the discharge flow rate output from the detector is kept constant. A pump control unit that controls the output, and the output unit may output the alarm or the command when the discharge pressure output from the detector becomes a predetermined value or more.

  According to the grinding device having the above configuration, since the discharge flow rate of the grinding liquid discharged from the pump is kept constant, the detector detects that the discharge pressure of the grinding liquid discharged from the pump has exceeded a predetermined value. By doing so, it is possible to correctly determine clogging of the ejection flow path. Thereby, the output unit can output a highly reliable alarm or command regarding the clogging of the ejection flow path.

  In the grinding apparatus, the detector detects the driving force of the pump, and controls the operation of the pump so that the discharge flow rate output from the detector is kept constant. The output unit may output the alarm or the command when the driving force of the pump output from the detector becomes a predetermined value or more.

  According to the grinding apparatus having the above configuration, since the discharge flow rate of the grinding liquid discharged from the pump is kept constant, the detector detects that the driving force of the pump has reached a predetermined value or more. The clogging of the flow path can be correctly determined. Thereby, the output unit can output a highly reliable alarm or command regarding the clogging of the ejection flow path.

  In the grinding apparatus, the output unit may include an alarm output unit that outputs an alarm indicating that the ejection flow path is clogged.

  According to the grinding device having the above-described configuration, an alarm is output when the ejection flow path is clogged, so that the clogging of the ejection flow path can be reliably notified to the administrator of the grinding apparatus.

  Further, in the grinding apparatus, the output unit outputs a rotation stop command for the rotation shaft unit to a drive source that rotates the rotation shaft unit based on the clogging of the ejection flow path. A control unit.

  According to the grinding device having the above configuration, the rotation of the rotating shaft portion stops when the ejection flow path is clogged, that is, the grinding of the work material stops, so that the grinding burn of the work material occurs. Can be prevented more reliably.

  The grinding apparatus further includes an auxiliary pump that additionally supplies the grinding liquid to the ejection flow path, and the output unit is configured to be connected to the auxiliary pump based on the clogging of the ejection flow path. An auxiliary system control unit that outputs an operation start command may be provided.

  According to the grinding device having the above configuration, when the ejection flow path is clogged, the grinding fluid is additionally supplied to the ejection flow path of the grindstone member. It is possible to prevent the occurrence of grinding burn.

  Moreover, the manufacturing method of the grinding device as one aspect according to the present invention is a method of manufacturing a grinding device to which a grindstone member having an ejection flow path that is formed in an annular shape and ejects a grinding fluid from an inner peripheral side to an outer peripheral side is attached. A preparation step of preparing an apparatus main body comprising: a rotary shaft portion that is fitted into an inner periphery of the grindstone member and rotationally drives the grindstone member; and a pump that supplies the grinding liquid to the ejection flow path. A detector for detecting at least the discharge flow rate of the grinding fluid discharged from the pump, and an alarm indicating that the ejection flow path is clogged according to the output from the detector, or clogging. And an installation step of installing an output unit that outputs an instruction based on the command.

  According to the manufacturing method of the grinding device described above, a grinding device capable of easily managing clogging of the ejection flow path in the grindstone member by simply attaching the detector and the output unit to a conventionally known device body as appropriate. It can be manufactured easily.

  According to the present invention, clogging of the ejection flow path in the grindstone member can be easily managed. Accordingly, it is possible to prevent grinding burn of the work material.

It is a mimetic diagram showing the grinding device concerning a first embodiment of the present invention. It is a schematic diagram which shows the grinding apparatus which concerns on 2nd embodiment of this invention. It is a schematic diagram which shows the grinding apparatus which concerns on 3rd embodiment of this invention. It is a schematic diagram which shows the grinding apparatus which concerns on 4th embodiment of this invention. It is a schematic diagram which shows the grinding apparatus which concerns on 5th embodiment of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment for carrying out a grinding apparatus and a manufacturing method of a grinding apparatus according to the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited only to these embodiments.

[First embodiment]
First, with reference to FIG. 1, the grinding device and the manufacturing method of the grinding device according to the first embodiment will be described.
As shown in FIG. 1, the grinding apparatus 1 is for attaching a grindstone member 2 formed in an annular shape, and includes a rotating shaft portion 11, a pump 12, a detector 13, and an output portion 14.

  The grindstone member 2 has an ejection channel for ejecting the grinding liquid W from the inner circumference side to the outer circumference side. The grindstone member 2 of the present embodiment is composed only of an annular abrasive grain layer 3 formed porous by sintering or adhering grindstone powder. For this reason, in this embodiment, the ejection flow path of the grindstone member 2 is comprised by the space part of the abrasive grain layer 3 made porous.

  The rotating shaft portion 11 is fitted into the inner periphery of the grindstone member 2 and rotationally drives the grindstone member 2. The rotary shaft 11 is driven to rotate by a motor (drive source) 15. In FIG. 1, the power of the motor 15 is transmitted to the rotary shaft portion 11 by the bevel gear 16, but the present invention is not limited to this. The motor 15 operates based on a command from the rotation control unit 17. The rotation control unit 17 outputs a rotation start command, a rotation stop command, and a rotation speed command of the rotary shaft unit 11 to the motor 15.

  A supply flow path 18 for supplying the grinding liquid W to the grindstone member 2 is formed in the rotary shaft portion 11. The supply flow path 18 extends in the axial direction inside the rotary shaft portion 11 and radially extends radially outward of the rotary shaft portion 11 at the first axial end portion 11A of the rotary shaft portion 11 to which the grindstone member 2 is attached. It extends and opens on the outer peripheral surface of the rotating shaft portion 11. The opening of the supply channel 18 in the first end portion 11 </ b> A of the rotating shaft portion 11 serves as a lead-out port that feeds the grinding liquid W from the supply channel 18 to the grindstone member 2. In FIG. 1, an introduction port for introducing the grinding liquid W into the supply flow path 18 at the second end portion 11 </ b> B in the axial direction of the rotation shaft portion 11 opens on the outer peripheral surface of the rotation shaft portion 11. For this reason, the 2nd end part 11B of the rotating shaft part 11 is connected with the other part of the rotating shaft part 11 via the bearing (not shown) so that it may not rotate with the other part of the rotating shaft part 11. .

  The rotating shaft portion 11 of the present embodiment includes a main shaft 19 that is rotationally driven by a motor 15, and an arbor 20 that is detachably attached to an axial end portion of the main shaft 19. The tip of the arbor 20 extending from the main shaft 19 side in the axial direction is a shank that is fitted into the inner periphery of the grindstone member 2 and holds the grindstone member 2. The outlet port of the supply flow path 18 described above opens to the outer peripheral surface of the shank. In FIG. 1, the grindstone member 2 is screwed to the shank by an annular holding plate 21 and screws 22 after being fitted to the shank of the arbor 20 described above.

  In the grinding apparatus 1 of this embodiment, since the grindstone member 2 is detachable from the rotary shaft portion 11 as described above, other types of tools such as cutting tools can be attached to the rotary shaft portion 11. Is possible. Further, in the grinding apparatus 1 of the present embodiment, since the arbor 20 is detachable from the main shaft 19, a holder or a chuck can be attached to the main shaft 19. That is, the grinding device 1 of the present embodiment can be functioned as another machine device such as a cutting device.

  The pump 12 supplies the grinding liquid W to the ejection flow path of the grindstone member 2. The pump 12 of this embodiment is connected to the inlet of the supply flow path 18 formed in the rotating shaft portion 11 by the external pipe 23. That is, the grinding liquid W discharged from the pump 12 is supplied to the ejection flow path of the grindstone member 2 via the external pipe 23 and the supply flow path 18. In the present embodiment, the operation of the pump 12 is controlled by the pump control unit 24. The pump control unit 24 controls the driving force (for example, driving power or driving current) of the pump 12.

The pump 12 is connected to a supply source 26 of the grinding fluid W by a supply source pipe 25. Thereby, the pump 12 supplies the grinding fluid W in the supply source 26 to the ejection flow path of the grindstone member 2. In the present embodiment, the supply source 26 of the grinding fluid W is a reservoir 26 for the grinding fluid W provided on the lower side in the vertical direction than the grindstone member 2 attached to the rotary shaft portion 11. The grinding liquid W ejected from the grindstone member 2 flows into the storage tank 26. That is, in the grinding apparatus 1 of the present embodiment, the grinding liquid W is circulated and reused for grinding the work material.
The grinding liquid W ejected from the grindstone member 2 includes abrasive grains of the abrasive layer 3 generated by grinding of the work material by the grindstone member 2 (abrasive layer 3), chips of the work material, and the like. For this reason, the supply source pipe 25 is provided with a filter 27 that removes abrasive grains of the abrasive layer 3 and chips of the work material from the grinding liquid W.

  The detector 13 includes a flow meter 28 that detects the discharge flow rate of the grinding liquid W discharged from the pump 12. The detector 13 of the present embodiment also includes a pressure gauge 29 that detects the discharge pressure of the grinding fluid W discharged from the pump 12. In the present embodiment, the pump control unit 24 controls the operation of the pump 12 so that the discharge pressure of the grinding fluid W output from the pressure gauge 29 is kept constant.

  The output unit 14 of the present embodiment is an alarm output unit 14 that outputs an alarm indicating that the ejection flow path of the grindstone member 2 is clogged according to the output from the detector 13. The alarm output unit 14 of the present embodiment indicates that the ejection flow path of the grindstone member 2 is clogged when the discharge flow rate of the grinding fluid W output from the flow meter 28 becomes a predetermined value or less. Is output. The alarm output from the alarm output unit 14 is, for example, light, sound, vibration, or the like.

  In the grinding device 1 of the present embodiment configured as described above, the work material is ground by bringing the outer periphery of the grindstone member 2 into contact with the work material while rotating the grindstone member 2. Moreover, the grinding liquid W is jetted from the outer periphery of the grindstone member 2 by the pump 12 during grinding, whereby the outer peripheral surface of the grindstone and the grinding surface of the work material are cooled by the grinding liquid W.

  Furthermore, in the present embodiment, the pump control unit 24 controls the operation of the pump 12 so that the discharge pressure of the grinding liquid W discharged from the pump 12 is kept constant during grinding. For this reason, when the ejection flow path of the grindstone member 2 is clogged with abrasive grains of the abrasive grain layer 3 or chips of the work material, the discharge flow rate of the grinding liquid W discharged from the pump 12 decreases. That is, a decrease in the discharge flow rate of the grinding liquid W means that the ejection flow path is clogged. The alarm output unit 14 outputs an alarm indicating that the ejection flow path of the grindstone member 2 is clogged when it is detected by the flow meter 28 that the discharge flow rate of the grinding fluid W has become a predetermined value or less. To do.

Next, an example of the manufacturing method of the above-described grinding apparatus 1 will be described.
In order to manufacture the grinding apparatus 1 of the present embodiment, first, a preparation process for preparing in advance the apparatus main body 1Z including the rotating shaft portion 11 and the pump 12 is performed. The apparatus main body 1Z is, for example, a conventionally known grinding apparatus. The apparatus main body 1Z may appropriately include, for example, a motor 15, a rotation control unit 17, a pump control unit 24, a supply source 26, a filter 27, and the like.
After the preparation process, an installation process for installing the detector 13 and the output unit 14 is performed. When the pressure gauge 29 of the detector 13 is included in the apparatus main body 1Z, in the installation process, only the flow meter 28 that detects the discharge flow rate of the grinding liquid W discharged from the pump 12 may be installed. Moreover, in the installation process of this embodiment, if the alarm output part 14 which outputs the alarm which shows that the ejection flow path of the grindstone member 2 was clogged according to the output from the detector 13 as the output part 14 is installed. Good.
Thus, the manufacture of the grinding device 1 is completed.

  As described above, according to the grinding apparatus 1 of the present embodiment, when the work material is ground, the discharge flow rate of the grinding liquid W discharged from the pump 12 is detected by the detector 13, so that the ejection flow path It is possible to determine whether or not is clogged. Moreover, since the alarm which shows that the ejection flow path of the grindstone member 2 was clogged is output from the alarm output part 14 according to the output from the detector 13, clogging of the ejection flow path can be easily managed. Is possible. Accordingly, it is possible to prevent grinding burn of the work material.

  In the grinding apparatus 1 of the present embodiment, the discharge pressure of the grinding liquid W discharged from the pump 12 is kept constant, and therefore the discharge flow rate of the grinding liquid W discharged from the pump 12 has become a predetermined value or less. Detection by the flow meter 28 of the detector 13 makes it possible to correctly determine clogging of the ejection flow path. Thereby, the alarm output unit 14 can output a highly reliable alarm regarding clogging of the ejection flow path.

  Further, in the grinding device 1 of the present embodiment, an alarm is output from the alarm output unit 14 when the ejection channel is clogged, so that the administrator of the grinding device 1 can reliably clog the ejection channel. Can be notified.

  Moreover, according to the manufacturing method of the grinding apparatus 1 of this embodiment, the ejection flow path in the grindstone member 2 can be obtained by simply attaching the detector 13 (particularly the flow meter 28) and the alarm output unit 14 to the conventionally known apparatus main body 1Z. It is possible to easily manufacture the grinding apparatus 1 that can easily manage the clogging.

[Second Embodiment]
Next, a grinding apparatus according to the second embodiment will be described with reference to FIG. In the second embodiment, components that are the same as those in the first embodiment are given the same reference numerals in the drawing, and descriptions thereof are omitted.

As shown in FIG. 2, the grinding apparatus 1 </ b> A of the present embodiment includes the same rotary shaft unit 11, pump 12, pump control unit 24, detector 13, alarm output unit 14 and the like as in the first embodiment.
However, in this embodiment, the pump control unit 24 controls the operation of the pump 12 so that the discharge flow rate of the grinding fluid W output from the flow meter 28 of the detector 13 is kept constant. Further, in the alarm output unit 14 of the present embodiment, the ejection flow path of the grindstone member 2 is clogged when the discharge pressure of the grinding liquid W output from the pressure gauge 29 of the detector 13 exceeds a predetermined value. An alarm indicating the effect is output.

  In the grinding apparatus 1A of the present embodiment, the pump controller 24 controls the operation of the pump 12 so that the discharge flow rate of the grinding liquid W discharged from the pump 12 is kept constant during grinding. For this reason, when the ejection flow path of the grindstone member 2 is clogged with abrasive grains of the abrasive grain layer 3 or chips of the work material, the discharge pressure of the grinding liquid W discharged from the pump 12 increases. That is, an increase in the discharge pressure of the grinding liquid W means that the ejection flow path is clogged. Then, the alarm output unit 14 outputs an alarm indicating that the ejection flow path of the grindstone member 2 is clogged when the pressure gauge 29 detects that the discharge pressure of the grinding liquid W has reached a predetermined value or more. To do.

  The manufacturing method of 1 A of grinding apparatuses comprised as mentioned above can be implemented similarly to 1st embodiment.

According to the grinding device 1A and the manufacturing method of the grinding device 1A of the present embodiment, the same effects as those of the first embodiment can be obtained.
Further, according to the grinding apparatus 1A of the present embodiment, since the discharge flow rate of the grinding liquid W discharged from the pump 12 is kept constant, the discharge pressure of the grinding liquid W discharged from the pump 12 exceeds a predetermined value. By detecting that the pressure gauge 29 of the detector 13 has become clogged, it is possible to correctly determine clogging of the ejection flow path. Thereby, the alarm output unit 14 can output a highly reliable alarm regarding clogging of the ejection flow path.

[Third embodiment]
Next, a grinding apparatus according to the third embodiment will be described with reference to FIG. In the third embodiment, components that are the same as those in the first and second embodiments are denoted by the same reference numerals in the drawing and description thereof is omitted.

  As shown in FIG. 3, the grinding apparatus 1 </ b> B of the present embodiment includes the rotating shaft portion 11, the pump 12, the pump control unit 24, the detector 13 </ b> B, the alarm output unit 14, and the like, as in the first and second embodiments. Prepare. Moreover, in the grinding apparatus 1B of this embodiment, the detector 13B includes a flow meter 28 similar to that of the first embodiment. As in the second embodiment, the pump control unit 24 controls the operation of the pump 12 so that the discharge flow rate of the grinding fluid W output from the flow meter 28 is kept constant.

However, the detector 13B of the present embodiment includes an output detection unit 30 that detects the driving force of the pump 12. The output detection unit 30 detects, for example, driving power or driving current as the driving force of the pump 12. In FIG. 3, the detector 13 </ b> B of the present embodiment does not include, for example, the same pressure gauge 29 (see FIGS. 1 and 2) as the first and second embodiments, but may include, for example.
The alarm output unit 14 of the present embodiment indicates that the ejection flow path of the grindstone member 2 is clogged when the driving force of the pump 12 output from the output detection unit 30 of the detector 13B exceeds a predetermined value. Output the alarm shown.

  In the grinding apparatus 1B of the present embodiment, the pump controller 24 controls the operation of the pump 12 so that the discharge flow rate of the grinding liquid W discharged from the pump 12 is kept constant during grinding. For this reason, when the ejection flow path of the grindstone member 2 is clogged with abrasive grains of the abrasive grain layer 3 or chips of the work material, the driving force of the pump 12 increases. That is, an increase in the driving force of the pump 12 means that the ejection flow path is clogged. The alarm output unit 14 outputs an alarm indicating that the ejection flow path of the grindstone member 2 is clogged when the output detection unit 30 detects that the driving force of the pump 12 has reached a predetermined value or more. To do.

  The manufacturing method of the grinding apparatus 1B configured as described above can be performed in the same manner as in the first embodiment. However, in the present embodiment, in the installation process, the output detection unit 30 may be installed in addition to the flow meter 28.

According to the grinding device 1 </ b> B and the manufacturing method of the grinding device 1 </ b> B of the present embodiment, there are the same effects as in the first embodiment.
Further, according to the grinding apparatus 1B of the present embodiment, since the discharge flow rate of the grinding liquid W discharged from the pump 12 is kept constant, the detector 13B indicates that the driving force of the pump 12 has become a predetermined value or more. By being detected by the output detector 30, the clogging of the ejection flow path can be correctly determined. Thereby, the alarm output unit 14 can output a highly reliable alarm regarding clogging of the ejection flow path.

[Fourth embodiment]
Next, a grinding apparatus according to the fourth embodiment will be described with reference to FIG. In the fourth embodiment, components that are the same as those in the first embodiment are given the same reference numerals in the drawing, and descriptions thereof are omitted.

  As shown in FIG. 4, the grinding apparatus 1 </ b> C of the present embodiment includes the rotary shaft unit 11, the pump 12, the pump control unit 24, the flow meter 28, the pressure gauge 29, the output unit 14 </ b> C, and the like similar to the first embodiment. . In the present embodiment, the pump control unit 24 operates the pump 12 so that the discharge pressure of the grinding fluid W output from the pressure gauge 29 of the detector 13 is kept constant, as in the first embodiment. To control.

  However, according to the output from the detector 13, the output unit 14C of the present embodiment outputs a command based on the fact that the ejection channel is clogged. The output unit 14 </ b> C of the present embodiment is a rotation control unit 17 that controls the operation of the motor 15. In the present embodiment, the rotation control unit 17 outputs a rotation stop command for the rotation shaft unit 11 to the motor 15 based on the fact that the ejection flow path is clogged. The rotation control unit 17 outputs a rotation stop command for the rotating shaft unit 11 to the motor 15 when the discharge flow rate of the grinding fluid W output from the flow meter 28 of the detector 13 becomes a predetermined value or less.

  In the grinding apparatus 1C of the present embodiment, as in the case of the first embodiment, the pump control unit 24 is configured so that the discharge pressure of the grinding liquid W discharged from the pump 12 is kept constant during grinding. The operation of the pump 12 is controlled. For this reason, when the ejection flow path of the grindstone member 2 is clogged with abrasive grains of the abrasive grain layer 3 or chips of the work material, the discharge flow rate of the grinding liquid W discharged from the pump 12 decreases. Then, the rotation control unit 17 outputs a rotation stop command for the rotation shaft unit 11 to the motor 15 when it is detected by the flow meter 28 that the discharge flow rate of the grinding fluid W has become a predetermined value or less.

  The manufacturing method of the grinding apparatus 1 </ b> C configured as described above can be performed in the same manner as in the first embodiment. However, when the rotation control unit 17 is included in the apparatus main body 1Z, only the detector 13 may be installed in the installation process.

According to the grinding device 1 </ b> C and the manufacturing method of the grinding device 1 </ b> C of the present embodiment, there are the same effects as in the first embodiment.
Further, according to the grinding apparatus 1C of the present embodiment, since the rotation of the rotating shaft portion 11 stops when the ejection flow path is clogged, that is, the grinding of the work material stops, the work material is ground. It is possible to prevent the occurrence of burning more reliably.

  The grinding device 1 </ b> C of the fourth embodiment described above may have a function of automatically exchanging the grindstone member 2 after the rotation of the rotary shaft portion 11 stops when the ejection flow path is clogged, for example. In this case, it becomes possible to automatically resume grinding of the work material.

  The output unit 14C of the grinding device 1C according to the fourth embodiment described above may further include, for example, the same alarm output unit 14 as in the first to third embodiments. In this case, for example, when the discharge flow rate of the grinding liquid W output from the flow meter 28 is equal to or lower than the first predetermined value, an alarm is output from the alarm output unit 14, and then the flow meter 28 performs grinding. When it is detected that the discharge flow rate of the liquid W has become equal to or lower than a second predetermined value lower than the first predetermined value, the rotation control unit 17 issues a rotation stop command for the rotation shaft unit 11 to the motor 15. It may be output.

  Further, like the grinding apparatus 1C of the fourth embodiment, the rotation control unit 17 is configured as an output unit 14C that outputs a command based on the fact that the ejection flow path is clogged according to the output from the detector 13. Is also possible in the grinding apparatuses 1A and 1B of the second and third embodiments.

[Fifth embodiment]
Next, a grinding apparatus according to a fifth embodiment will be described with reference to FIG. In the fifth embodiment, components that are the same as those in the first embodiment are given the same reference numerals in the drawings, and descriptions thereof are omitted.

  As shown in FIG. 5, the grinding apparatus 1D of the present embodiment includes the same rotary shaft unit 11, pump 12, pump control unit 24, flow meter 28, pressure gauge 29, output unit 14D, and the like as in the first embodiment. . In the present embodiment, the pump control unit 24 operates the pump 12 so that the discharge pressure of the grinding fluid W output from the pressure gauge 29 of the detector 13 is kept constant, as in the first embodiment. To control.

  However, the grinding apparatus 1 </ b> D of the present embodiment includes an auxiliary pump 31 that additionally supplies the grinding liquid W to the ejection passage of the grindstone member 2. For example, as shown in FIG. 5, the auxiliary pump 31 may be connected to an external pipe 23 through which the grinding liquid W discharged from the pump 12 flows by the auxiliary system pipe 32. May be directly connected to the inlet of the supply flow path 18. The auxiliary system pipe 32 is provided with an auxiliary system valve 33 that opens and closes the auxiliary system pipe 32.

  Further, the auxiliary pump 31 is connected to the supply source 26 of the grinding fluid W by an auxiliary system supply source pipe 34. Thereby, the auxiliary pump 31 supplies the grinding fluid W in the supply source 26 to the ejection flow path of the grindstone member 2, similarly to the pump 12. In the grinding apparatus 1D of the present embodiment, a filter 27 is provided in the supply source pipe 25 as in the first embodiment. For this reason, the auxiliary system supply source pipe 34 is provided independently of the supply source pipe 25 between the filter 27 and the auxiliary pump 31, and is formed integrally with the supply source pipe 25 between the filter 27 and the supply source 26. Has been.

In addition, the output unit 14D of the present embodiment issues a command based on the clogging of the ejection flow path of the grindstone member 2 according to the output from the detector 13, as in the first to fourth embodiments described above. Output. The output unit 14D of the present embodiment is an auxiliary system control unit 35 that controls the operation of the auxiliary pump 31 described above.
The auxiliary system control unit 35 outputs an operation start command to the auxiliary pump 31 based on the clogging of the ejection flow path of the grindstone member 2. Further, the auxiliary system control unit 35 outputs a command to open the auxiliary system pipe 32 to the auxiliary system valve 33 based on the fact that the ejection flow path is clogged. In the present embodiment, the auxiliary system control unit 35 outputs an operation start command to the auxiliary pump 31 when the discharge flow rate of the grinding fluid W output from the flow meter 28 of the detector 13 becomes a predetermined value or less. Then, a command to open the auxiliary system pipe 32 is output to the auxiliary system valve 33.

  In the grinding apparatus 1D of the present embodiment, as in the case of the first embodiment, the pump control unit 24 is configured so that the discharge pressure of the grinding liquid W discharged from the pump 12 is kept constant during grinding. The operation of the pump 12 is controlled. For this reason, when the ejection flow path of the grindstone member 2 is clogged with abrasive grains of the abrasive grain layer 3 or chips of the work material, the discharge flow rate of the grinding liquid W discharged from the pump 12 decreases. Then, the auxiliary system control unit 35 outputs an operation start command to the auxiliary pump 31 when the flow meter 28 detects that the discharge flow rate of the grinding fluid W has become a predetermined value or less, and the auxiliary system valve A command to open the auxiliary piping 32 is output to 33. Thereby, the flow volume of the grinding fluid W supplied to the ejection flow path of the grindstone member 2 can be increased.

  The manufacturing method of the grinding apparatus 1D configured as described above can be performed in the same manner as in the first embodiment. However, in the installation process, in addition to the auxiliary system control unit 35 that is the output unit 14D, the auxiliary pump 31, the auxiliary system piping 32, and the auxiliary system supply source piping 34 are also installed. Further, an auxiliary system valve 33 is provided in the auxiliary system pipe 32 as necessary.

And according to the grinding apparatus 1D of this embodiment and the manufacturing method of the grinding apparatus 1D, there exists an effect similar to 1st embodiment.
Further, according to the grinding apparatus 1D of the present embodiment, when the ejection flow path of the grindstone member 2 is clogged, the grinding liquid W is additionally supplied to the ejection flow path, so that the work material is ground. Even if it continues, it can prevent that the grinding burn of a work material generate | occur | produces.

  The output unit 14D of the grinding device 1D of the fifth embodiment described above may further include, for example, the same alarm output unit 14 as in the first to third embodiments. In this case, for example, when the discharge flow rate of the grinding fluid W output from the flow meter 28 becomes a predetermined value or less, an alarm is output from the alarm output unit 14 and at the same time, the grinding fluid W is ejected by the auxiliary pump 31. It is good to supply to the flow path additionally.

  Further, the output unit 14D of the grinding device 1D of the fifth embodiment may further include a rotation control unit 17 as in the fourth embodiment, for example. In this case, for example, when the discharge flow rate of the grinding liquid W output from the flow meter 28 is equal to or lower than the first predetermined value, the auxiliary pump 31 additionally supplies the grinding liquid W to the ejection flow path, Thereafter, when it is detected by the flow meter 28 that the discharge flow rate of the grinding fluid W is equal to or lower than a second predetermined value that is lower than the first predetermined value, the rotation control unit 17 rotates the rotating shaft with respect to the motor 15. The rotation stop command of the unit 11 may be output.

  Further, as in the grinding device 1D of the fifth embodiment, the configuration in which the grinding liquid W is additionally supplied to the ejection flow path by the auxiliary pump 31 according to the output from the detector 13 is the same as that of the second and third embodiments. The present invention can also be applied to the grinding apparatuses 1A and 1B.

  Although the details of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, the abrasive grain layer 3 of the grindstone member 2 may not be formed porous. In this case, the ejection flow path of the grindstone member 2 should just be comprised by the through-hole penetrated to radial direction from the inner periphery to the outer periphery of the abrasive grain layer 3, for example.
Moreover, the grindstone member 2 may be configured by attaching an annular grindstone base to the inner peripheral side of the abrasive grain layer 3, for example. In this case, the grindstone base penetrates from the inner circumference side to the outer circumference side, communicates with the space portion of the abrasive layer 3 made porous and the above-described through hole, and forms an ejection channel together with these. A communication hole may be formed.

DESCRIPTION OF SYMBOLS 1,1A, 1B, 1C, 1D ... Grinding device, 1Z ... Device main body, 2 ... Whetstone member, 11 ... Rotary shaft part, 12 ... Pump, 13, 13B ... Detector, 14 ... Alarm output part (output part), 14C, 14D ... Output unit, 15 ... Motor (drive source), 17 ... Rotation control unit, 28 ... Flow meter, 29 ... Pressure gauge, 30 ... Output detection unit, 31 ... Auxiliary pump, 35 ... Auxiliary system control unit

Claims (8)

A grinding device to which a grindstone member having an ejection flow path that is formed in an annular shape and ejects a grinding liquid from an inner circumferential side to an outer circumferential side is attached,
A rotating shaft portion that is fitted into the inner periphery of the grindstone member and rotationally drives the grindstone member;
A pump for supplying the grinding fluid to the ejection channel;
A detector for detecting at least the discharge flow rate of the grinding fluid discharged from the pump;
In response to an output from the detector, an alarm indicating that the ejection flow path is clogged, or an output unit that outputs a command based on the clogging of the ejection flow path,
A grinding apparatus comprising: The detector detects a discharge pressure of the grinding fluid discharged from the pump;
A pump control unit that controls the operation of the pump so that the discharge pressure output from the detector is kept constant;
The grinding apparatus according to claim 1, wherein the output unit outputs the alarm or the command when the discharge flow rate output from the detector becomes a predetermined value or less. The detector detects a discharge pressure of the grinding fluid discharged from the pump;
A pump control unit for controlling the operation of the pump so that the discharge flow rate output from the detector is kept constant;
The grinding apparatus according to claim 1, wherein the output unit outputs the alarm or the command when the discharge pressure output from the detector becomes a predetermined value or more. The detector detects the driving force of the pump;
A pump control unit for controlling the operation of the pump so that the discharge flow rate output from the detector is kept constant;
The grinding apparatus according to claim 1, wherein the output unit outputs the alarm or the command when a driving force of the pump output from the detector becomes a predetermined value or more.   The grinding device according to any one of claims 1 to 4, wherein the output unit includes an alarm output unit that outputs an alarm indicating that the ejection flow path is clogged.   The said output part is provided with the rotation control part which outputs the rotation stop command of the said rotating shaft part with respect to the drive source which rotationally drives the said rotating shaft part based on the said ejection flow path being clogged. The grinding apparatus according to any one of claims 1 to 5. An auxiliary pump for additionally supplying the grinding fluid to the ejection flow path,
The said output part is provided with the auxiliary system control part which outputs an operation start command with respect to the said auxiliary pump based on the said ejection flow path being clogged. The grinding apparatus as described. A method of manufacturing a grinding device to which a grindstone member having an ejection flow path for ejecting a grinding liquid from an inner circumference side to an outer circumference side is attached,
A preparation step of preparing an apparatus main body comprising: a rotary shaft portion that is fitted into an inner periphery of the grindstone member and rotationally drives the grindstone member; and a pump that supplies the grinding liquid to the ejection flow path;
A detector that detects at least the discharge flow rate of the grinding fluid discharged from the pump, and an alarm indicating that the ejection flow path is clogged, or clogged according to the output from the detector. An installation process for installing an output unit that outputs a command based on
A method for manufacturing a grinding apparatus including:

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